Why Transformation Takes Time: Slow Time, Bergson and the Evidence on Change

Evergreen reflection · Philosophy & personal growth

Think of a seed. You can water it with enthusiasm, read it motivating quotes, and book a weekend workshop on “accelerated germination”. The seed will do what seeds do, at the speed seeds do it. Now think of the last time you decided to change something about yourself: a habit, a way of reacting, a relationship with your own body. How long did you expect it to take? And how long did it actually take?

This article is about the gap between those two answers. It argues that why transformation takes time is not a question about patience or discipline. It is a question about what change is: a duration, not an event. We will look at the philosopher who gave that idea its sharpest form, at what psychology and neuroscience can actually say about the pace of change, at what the research does not support (the famous “21 days” included), and at what this means for how we teach at Ad Unum.

Contents

1. Definitions
2. Bergson and the time that cannot be sped up
3. What the research says about habits
4. Consolidation: the work done while you are not working
5. Spacing, repetition and deliberate practice
6. Change is not a straight line
7. What is not supported by the evidence
8. Why do we keep promising speed?
9. Living in slow time: six practical principles
10. The Ad Unum commitments
11. A checklist for your own process
12. FAQ
13. Sources

Definitions

Slow time (as used in this article): the idea that some processes, such as learning, healing, maturing and changing character, unfold as a continuous duration that cannot be shortened without altering the process itself.

Durée: the term the French philosopher Henri Bergson used for lived time, the continuous flow in which each moment carries the previous ones within it, as opposed to the clock time of equal, separable units.

Consolidation: the set of biological processes, many of them active during sleep, by which newly acquired information and skills become stable and integrated with what we already know.

Ad Unum: the approach to personal and energetic awareness developed by Reconnective Academy International, built on the idea that the person is a unified system able to self-regulate when the right conditions are created. Ad Unum is a practice of awareness and wellbeing, complementary to and never a substitute for medical or psychological care. It is not hypnosis.

Ad Unum Experience: the Academy’s introductory course, in which participants learn the fundamentals of the Ad Unum approach through guided practice, in small groups, at a human pace.

Ad Unum Energy Healing: the Academy’s practitioner-level course, which trains people to offer Ad Unum sessions. The facilitator does not heal: they create the conditions in which the system regulates itself. No induction, no suggestion.

Bergson and the time that cannot be sped up

In 1889 Henri Bergson published what is usually translated as Time and Free Will. Its central move is simple and disorienting. We habitually picture time as a line made of equal points, like the ticks of a clock, and we imagine that we could, in principle, compress those ticks. But that is a spatial picture laid over experience. What we actually live, Bergson argued, is durée: a flow in which the past is not left behind but carried forward, so that each moment is shaped by everything before it.

A melody is his favourite example. Hearing a tune is not receiving a series of separate notes and adding them up. Each note is heard in the ones that came before. Play the notes at ten times the speed and you do not get the same melody faster; you get something else, or noise. The Stanford Encyclopedia of Philosophy entry on Bergson gives a careful account of this distinction between lived duration and measured time.

Why does this matter for personal growth? Because it reframes the question. If change were a matter of reaching a destination by the shortest route, speed would be a virtue. If change is more like a melody, or like the ripening of a fruit, then the duration is part of what is being made. A person who has “become more patient” in an afternoon has either had a remarkable insight (which still has to be lived) or has acquired a new vocabulary. The patience itself is built from many occasions in which the old reaction came up, and something slightly different happened.

A word of caution. Bergson is a philosopher, not an experimenter, and nobody should claim that psychology “proves” his view. What we can say is that his picture is a useful lens, and that several strands of empirical research point in a compatible direction, as the next sections show.

What the research says about habits

If you have read any self-help book, you have met the claim that a habit takes 21 days to form. It is repeated so often that it feels like science. It is not. The figure is usually traced to a plastic surgeon’s observations in the 1960s about how long patients took to adjust to a new appearance, and it was later generalised far beyond anything he measured.

The study most often cited by researchers in this area is by Phillippa Lally and colleagues at University College London. They followed 96 volunteers who chose a new, simple behaviour (drinking a glass of water at breakfast, going for a ten-minute walk after lunch) and recorded each day how automatic it felt. The median time to reach a plateau of automaticity was 66 days, but the range was enormous: from 18 days to 254 days (the upper figure is an extrapolation from the model). Simple behaviours became automatic faster than complex ones, and missing a single day did not significantly damage the process.^[1]

Three lessons follow. First, there is no universal number: individuals and behaviours differ widely. Second, even the fast end of the range is weeks, not days. Third, and this is the finding most people miss, an occasional lapse did not derail the process. The curve is not a staircase you fall down; it is closer to a slope you keep climbing, with some rough ground.

A fair note on limits: the sample was small, composed of volunteers who were already motivated, and the behaviours were simple. The study says little about deep changes such as how you respond to criticism or to your own fear. It is evidence about the shape of habit formation, not a timetable for transformation.

Consolidation: the work done while you are not working

There is a second, quieter reason why change needs time, and it has nothing to do with willpower. Newly learned material is fragile. The brain stabilises it through consolidation, and a substantial part of that happens offline, particularly during sleep.

Matthew Walker and Robert Stickgold reviewed the evidence in a widely cited paper in Neuron. They described how different kinds of memory and skill appear to benefit from different sleep stages, and how performance on some tasks improves after a night’s sleep without any further practice.^[2] The details of mechanism are still debated, and the field has moved on since 2004, so it is wise to read this as “sleep matters for learning” rather than as a precise recipe.

The practical implication is humbling and liberating at once. Part of any learning is not under your control and does not happen while you are trying. You cannot pull an all-nighter on integration. The most effective thing you can often do for a process of change is to practise, then rest, then practise again.

Spacing, repetition and deliberate practice

The same message comes from one of the most robust findings in the psychology of learning: the spacing effect. Nicholas Cepeda and colleagues reviewed 317 experiments and found that, for the same total study time, spreading it over separated sessions produces better long-term retention than massing it together.^[3] One weekend of eight hours is rarely the equal of eight weekly hours, whatever the brochure says.

What about the famous “10,000 hours”? K. Anders Ericsson and colleagues’ 1993 paper on deliberate practice showed that the best performers in domains like music accumulated vast amounts of focused, feedback-rich practice over years.^[4] The popular summary, that anyone can master anything with 10,000 hours, is not what the paper claims. A later meta-analysis by Macnamara, Hambrick and Oswald found that deliberate practice explained a meaningful but varying share of performance differences, large in games and music, small in professions, and much smaller in education.^[5] Practice matters. It is not the whole story, and it is certainly not a guarantee.

For our purposes the useful common point is this: in every domain studied, what produces durable change is repeated, spaced, attentive engagement over time. Nobody has found a way to skip it.

Change is not a straight line

In 1983 James Prochaska and Carlo DiClemente proposed what became the transtheoretical model, describing how people change addictive behaviours through stages: from not yet considering change, to contemplation, preparation, action and maintenance, with relapse and recycling as common features rather than failures.^[6] The model has been criticised and refined, and it is not a law of nature. But its enduring contribution is descriptive and humane: people move back and forth, and revisiting an earlier stage is part of the typical path.

This is one reason a transformation that looks “slow” from outside is often doing real work from inside. A person who returns to an old pattern after months of progress has not necessarily lost everything. Often they come back with more understanding of the pattern than they had the first time. A line drawn with a ruler is a poor picture of that.

What is not supported by the evidence

Here is the honest turn in the argument. If slow time matters, one might be tempted to turn it into a new rule: “real change always takes years”, “if it was fast it was not real”. That would be just as unsupported as the promise of overnight transformation.

Some changes can be sudden. A single piece of information can change a decision. A clear moment can shift how you see a situation. Research on insight shows that sudden “aha” experiences are real. What the evidence does not show is that a sudden insight, on its own, rewires a lifetime of reaction. The insight is an opening. What follows it, the repetition, the lapses, the sleeping on it, is the building.

Equally unsupported:

• That there is a universal number of days for any meaningful change (the 21-day claim, but also any other single figure).
• That more intensity always means faster results: massed practice generally loses to spaced practice for retention.
• That slowness is a moral virtue in itself. A slow process that is going nowhere is a signal to change the method, not a lesson in patience.
• That any practice, ours included, can promise a specific outcome in a specific time, especially concerning health.

Why do we keep promising speed?

If the evidence is this consistent, why does the language of fast transformation persist? Here are four hypotheses, from the most benevolent to the least, without putting anyone’s intentions on trial.

1. It is how we remember. Change looks sudden in retrospect. We recall the turning point and forget the years of preparation around it.
2. It is how we hope. When something hurts, the idea that it could end quickly is deeply attractive, and it is a legitimate human feeling.
3. It is how we simplify. A clear short promise is easier to communicate than a nuanced one, even to those who know better.
4. It sells. Speed is commercially appealing, and any field that earns money from change has an incentive to emphasise it.

Understanding the mechanism does not require cynicism. It requires only that we notice when a promise of speed is doing the work that an honest description of the process should be doing.

Living in slow time: six practical principles

What does a practice look like that takes duration seriously? Six principles, offered as working hypotheses, not commandments.

1. Choose smaller and more frequent

Given the spacing effect and the habit data, a modest daily gesture usually outperforms an ambitious weekly resolution. Ten minutes you actually do beat an hour you plan.

2. Build in rest on purpose

Plan the pauses. Sleep, days off and unstructured time are not interruptions of the process; they are part of its machinery.

3. Track direction, not speed

Compare yourself to three months ago, not to last Tuesday. Day-to-day variation is noise; the trend is the signal.

4. Expect the return of the old pattern

If the old reaction shows up again, ask what is different this time: how quickly you noticed, how long it lasted, what you did next. That is the progress.

5. Be wary of anyone who sets the date

A teacher, practitioner or programme that promises a specific transformation by a specific deadline is promising something the research cannot support.

6. Keep a log

Memory edits the story. A few lines a week let you see the real shape of your process, including the parts you would otherwise forget.

The Ad Unum commitments

We would be inconsistent if we wrote this article and taught otherwise. This is what we commit to, concretely:

• No promised timelines. We do not announce what will change, or by when, in anyone’s life or health.
• Human schedules. Real breaks, reasonable hours, time to sleep and to integrate between sessions of a course.
• Small groups. So that each person’s pace is visible and can be respected.
• A facilitator who does not heal. The facilitator does not heal: they create the conditions in which the system regulates itself. No induction, no suggestion: Ad Unum is not hypnosis.
• Complementary, never substitutive. Our work does not replace medical or psychological care. If you are in treatment, we will want you to stay in it.
• The door stays open. You can come back to a practice after a pause without being treated as someone who “failed”.

If you want to see how this looks in practice, explore our Ad Unum page and the course calendar, where you will find Ad Unum Experience and Ad Unum Energy Healing. For the broader reflection, see our philosophy and personal growth pages, and the science section for the research side.

A checklist for your own process

1. Is the change I want described as a direction, or only as a date?
2. Have I made the daily gesture small enough to repeat even on a bad day?
3. Have I scheduled rest as seriously as practice?
4. Do I know what I would count as progress other than “the problem is gone”?
5. If the old pattern returns, do I have a way of reading it other than “I failed”?
6. Is anyone promising me a result by a deadline?
7. Am I keeping a record, however brief?
8. Is my process complementary to proper care where care is needed?

Conclusion: the right to a real timescale

People who are trying to change deserve a truthful account of how long change tends to take: longer than we hope, less linear than we expect, and dependent on things like sleep and repetition that no force of will can bypass. They also deserve to hear that “slow” does not mean “stuck”. A melody played at its own tempo is not a delayed version of a faster song. It is the song.

The best thing a teacher can give is not a shortcut. It is company on the actual road, and an honest map of how long the road tends to be.

FAQ

How long does it take to change a habit?

There is no single answer. In a well-known study of 96 volunteers, the median time for a simple new behaviour to become automatic was 66 days, with a range from 18 to 254 days. The 21-day claim is not supported by that research.

Is it true that missing a day ruins progress?

In the same study, missing one occasional opportunity did not materially affect the long-term formation of the habit. Consistency matters; perfection is not required.

Why does sleep matter for personal change?

Part of learning is consolidated during sleep, when new information and skills are stabilised. This is one reason why rest is part of the process and not a pause from it.

Can change ever be sudden?

Insights can arrive suddenly, and sometimes a single decision changes a life. But turning an insight into a stable way of living usually takes repetition over time.

Does “slow” mean I should be patient with a problem that is not improving?

No. Patience is not a replacement for a good method. If a process is not moving in any direction after a reasonable period, review the method, and seek medical or psychological help where relevant.

What does Ad Unum say about timelines?

Ad Unum does not promise outcomes or timelines. It is an awareness and wellbeing practice, complementary to medical and psychological care, taught at a human pace in small groups.

Is Ad Unum hypnosis?

No. There is no induction and no suggestion. The facilitator does not heal; they create conditions in which the person’s system can regulate itself.

Sources

1. Lally, P., van Jaarsveld, C. H. M., Potts, H. W. W., & Wardle, J. (2010). How are habits formed: Modelling habit formation in the real world. European Journal of Social Psychology, 40(6), 998–1009. doi.org/10.1002/ejsp.674
2. Walker, M. P., & Stickgold, R. (2004). Sleep-dependent learning and memory consolidation. Neuron, 44(1), 121–133. doi.org/10.1016/j.neuron.2004.08.031
3. Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks: A review and quantitative synthesis. Psychological Bulletin, 132(3), 354–380. doi.org/10.1037/0033-2909.132.3.354
4. Ericsson, K. A., Krampe, R. T., & Tesch-Römer, C. (1993). The role of deliberate practice in the acquisition of expert performance. Psychological Review, 100(3), 363–406. doi.org/10.1037/0033-295X.100.3.363
5. Macnamara, B. N., Hambrick, D. Z., & Oswald, F. L. (2014). Deliberate practice and performance in music, games, sports, education, and professions: A meta-analysis. Psychological Science, 25(8), 1608–1618. doi.org/10.1177/0956797614535810
6. Prochaska, J. O., & DiClemente, C. C. (1983). Stages and processes of self-change of smoking: Toward an integrative model of change. Journal of Consulting and Clinical Psychology, 51(3), 390–395. doi.org/10.1037/0022-006X.51.3.390
7. Stanford Encyclopedia of Philosophy. Henri Bergson. plato.stanford.edu/entries/bergson/

The contents of this article are educational and do not replace diagnosis, medical treatment or psychological care.

Guglielmo Poli
Director of Reconnective Academy International
Author of Consciousness and Healing
Founder of Ad Unum Experience