The Six Factors That Actually Predict Whether Your New Habit Will Stick

Every habit-building attempt I've ever made has gone the same way. The first week runs on enthusiasm. The second week runs on the memory of the first. By the third, it's quietly stopped happening, and the strange part is how rarely anyone can say exactly why. Not "I decided to stop" — it just wasn't there one day, the way a plant you forgot to move out of a cold room stops growing without any single dramatic event you could point to. Most habit advice treats that collapse as a willpower problem. A new reanalysis of a six-month study suggests it's something more specific and more fixable than that.

A Six-Month Study Nobody Planned to Be About Disrupted Routines

The research, a preregistered reanalysis published in 2026 by Sebastian Bürgler, Marina Milyavskaya, Gail McMillan, Rachel Burns, Phillippa Lally, and Benjamin Gardner, followed 254 people for six months, with monthly surveys tracking how automatic a chosen behavior had become and testing it against ten candidate factors researchers thought might predict habit strength. The data collection happened to fall during the COVID-19 pandemic, which, without anyone intending it, turned into a natural experiment in what happens to habits when routines get disrupted for reasons that have nothing to do with a person's discipline.

Of the ten factors tested, six came out significantly linked to habit strength: autonomous motivation, how often the behavior actually happened, how stable the surrounding context stayed, whether people felt energized doing it, whether they felt pleased doing it, and how easy it felt. A cluster analysis sorted participants into two trajectories — habit formation and habit degradation — and the clusters split apart most cleanly on behavioral complexity, frequency, and context stability. That last one is the detail worth sitting with, because it's the factor conventional habit advice talks about least.

The Six Factors, and Which Ones You Actually Control

Lumping these together as "just build better habits" flattens a distinction that matters: some of the six are levers you can pull directly, and some of them are closer to conditions you have to arrange for rather than decide your way into.

Autonomous motivation — doing something because it connects to a value you hold, not because someone else wants you to or you'd feel guilty otherwise — is genuinely within reach. It responds to a fairly simple question: if no one ever checked on this, would you still want the outcome? If the honest answer is no, the habit is fighting your own reasons for it before it even starts.

Behavior frequency is the most directly controllable of the six, in the narrow sense that doing the thing more often is a decision you can make today. It's also the least glamorous piece of advice possible, which is probably why it gets skipped in favor of more interesting-sounding fixes.

Context stability sits in the middle. You don't fully control your environment, but you can engineer more of it than you'd think — same chair, same time of day, same trigger that kicks the behavior off. More on this below, because it's the one the study's own structure ended up spotlighting.

Feeling energized and feeling pleased are the two most circumstantial of the six. Sleep, stress load, and how your week is going all shape whether an activity feels good or draining on a given day, and no amount of intention fully overrides that. What you can control is timing — attaching the habit to a part of the day when energy tends to be higher rather than fighting your own low point on principle.

Perceived ease is more controllable than it looks, because ease is often a design problem in disguise. A habit that requires finding equipment, driving somewhere, or making five decisions before it starts will feel harder than the same habit with all of that friction stripped out in advance, regardless of how motivated you are.

Why Context Stability Deserves More Credit Than Willpower Gets

Most popular habit advice is framed as a discipline problem: try harder, want it more, don't give in. The study's cluster analysis points somewhere else. The behaviors that turned into stable habits and the ones that degraded over six months split apart largely on how stable their surrounding context was — not on how motivated people said they felt at the outset. And because the data collection period ran straight through pandemic-era disruption, the researchers effectively got a population-wide stress test of what happens to habits when context gets yanked out from under people who never stopped wanting the outcome.

That reframes a lot of "failed" habits. A meditation practice that quietly stopped when a household's morning routine changed wasn't a discipline failure — the context it was anchored to disappeared, and nothing replaced it. I've watched this happen with my own sitting practice more than once: it wasn't that I stopped valuing it, it was that the fifteen minutes it used to occupy got colonized by something else the moment my schedule shifted, and I didn't notice until the habit was already gone. Willpower-focused advice has no answer for that kind of loss, because it was never a willpower problem to begin with.

A Six-Factor Scorecard for a Habit You're Currently Building

Pick one habit you're actively trying to build or one that's slipping, and rate yourself honestly on each factor, 1 to 5:

• Autonomous motivation: If nobody ever noticed whether you did this, would you still want to? (1 = doing it for someone else's approval, 5 = it connects to something you'd care about regardless)
• Frequency: How many days in the last two weeks did it actually happen? (1 = once or twice, 5 = nearly every day)
• Context stability: Does it happen at roughly the same time, place, and trigger each time? (1 = different every time, 5 = same anchor almost always)
• Energy: Do you generally feel energized rather than depleted going into it? (1 = usually dreading it, 5 = usually feel capable and alert)
• Pleasure: Do you enjoy some part of actually doing it, separate from the outcome? (1 = purely a means to an end, 5 = genuinely satisfying in the moment)
• Ease: How many steps or decisions stand between you and starting? (1 = several, 5 = essentially zero friction)

Whichever factor scores lowest is where to spend your attention first — not because the others don't matter, but because a habit rarely fails on all six fronts at once. Usually one or two are doing the damage, and the rest are fine. If frequency and motivation both score high but context stability scores low, the fix isn't more discipline; it's picking one fixed time and place and defending it, the same way you'd defend a meeting on a calendar.

Common Questions

Which of the six factors matters most? The study didn't rank them by size of effect in a way that crowns one winner, but the cluster analysis singled out context stability, frequency, and behavioral complexity as what most cleanly separated people whose habits strengthened from people whose habits degraded over the six months.

Can you improve a factor like "feeling pleased" if the activity genuinely isn't enjoyable? Somewhat. Pairing an unpleasant task with something you do enjoy, or changing which part of the task you focus on, can shift this a little — but if a habit scores consistently low on pleasure no matter what you try, it may be worth questioning whether it's the right habit for you rather than forcing it.

Does this mean environment matters more than motivation? Not exactly — both were significant predictors. What the pandemic-era data showed is that even strong motivation doesn't protect a habit from a collapsed context, which is a different claim than motivation not mattering at all.

How long should I run the scorecard before deciding a habit isn't working? Give it at least two to three weeks between scoring attempts. The study measured habit strength monthly for six months precisely because habits shift slowly enough that weekly swings are mostly noise.

What if all six factors score reasonably well and the habit still isn't sticking? That's worth taking seriously rather than dismissing — it may mean a factor outside this study's ten candidates is at play, or that the habit conflicts with a bigger priority in your life that no amount of context engineering will resolve.

I used to think the habits that stuck were the ones I wanted badly enough. What the context-stability finding actually explains is something quieter: the habits that stuck were mostly the ones that had somewhere fixed to live.