Start small habits: how tiny should a habit be?

To start a habit that lasts, make it so small you could do it on your worst day: put on your running shoes, do one push-up, read one page. That tiny version is the habit. On good days you can do more, but the tiny version is what you promise yourself, and it’s what counts. Simple actions become automatic faster than big ones, and a habit only becomes automatic if you keep repeating it.

If you’ve ever started a habit on a Monday with a plan for a 5 km run, 30 minutes of meditation and a chapter a night, you know how it ends. The first week goes well. Then one day is busy, the plan feels too big to fit, you skip it, and by the second week it’s gone. It wasn’t a lack of willpower. The habit was sized for your best day, and most days aren’t your best day.

Why starting big backfires

A big habit needs motivation every single day. Motivation is high at the start and then it goes up and down, like everything else in a normal week. On a low day, a 30-minute workout looks like a mountain, so you skip it. Skip it a few times and skipping becomes the routine.

A small habit barely needs motivation at all. BJ Fogg, who founded the Behavior Design Lab at Stanford and wrote the book Tiny Habits (2019), puts it simply on his own site: “when a behavior is easy, you don’t need to rely on motivation.” His behaviour model says a behaviour happens when motivation, ability and a prompt come together at the same moment. You can’t control your motivation much. You can make the habit easier.

How small should a habit be?

Small enough to pass the worst-day test: picture yourself tired, late and in a bad mood. Could you still do it? If the answer is “probably not”, shrink it again.

In practice that usually means one of two things, both described in Tiny Habits:

• The first step. Put on your running shoes. Open the notebook. Unroll the yoga mat.
• A scaled-back version. One push-up. One page. Floss one tooth, which is Fogg’s own well-known example.

A good tiny habit takes a minute or two, needs no preparation and has a clear finish. “Read one page” is done when the page is done. “Read a bit more” never is.

Why tiny habits work

Repetition builds the habit, not effort

Psychologists define habits as actions triggered automatically by the context they’re linked to. In their guide for family doctors, Gardner, Lally and Wardle (2012) sum up the research: “mere repetition of a simple action in a consistent context leads, through associative learning, to the action being activated upon subsequent exposure to those contextual cues.”

Notice what’s missing from that sentence: intensity. The habit forms because you repeat the action in the same situation, not because it was hard. One page every evening after dinner builds the “after dinner, I read” link just as well as twenty pages, and you’re far more likely to actually do the one page every evening.

Simple habits become automatic faster

In the best-known study of habit formation, Lally and colleagues (2010) asked 96 volunteers to repeat one new daily behaviour for twelve weeks. Those who chose an exercise behaviour took longer to reach their plateau of automaticity than those who chose eating or drinking ones. Gardner, Lally and Wardle put the lesson plainly: “simpler actions become habitual more quickly”. They also advise aiming “for small and manageable behaviour changes, because failure can be discouraging”, and give an example: a sedentary person should walk one or two stops more before getting on the bus, not the entire route, “at least for their first habit goal.” (How long the whole process takes is its own question, covered in how long it takes to build a habit.)

Small wins build confidence

The same paper notes that “behaviour change achievements, however small, can increase self-efficacy”, the belief that you can do it, which in turn makes further change easier. A week of one push-up a day is a week of keeping a promise to yourself. A week of failed 30-minute workouts is the opposite.

Keep two versions: a minimum and a normal

A tiny habit doesn’t mean you’re only ever allowed to do the tiny thing. Give each habit two versions:

• The minimum version: the worst-day version. It always counts as done.
• The normal version: what you do on an ordinary or good day.

You start the minimum every time. Once your shoes are on, you often end up going for the run. Once the book is open, one page often becomes ten. But the promise is only the minimum, so a bad day never breaks the habit. The minimum is also your way back after a miss: that’s the idea behind never miss twice.

Tiny habit examples

Here’s how big goals shrink into habits you can start today:

Give each one a moment to live in, like “after coffee” or “when I get home”, so the situation starts to trigger it. There’s a whole post on picking a cue, and the free habit plan builder helps you write the cue, the habit and its minimum version in one sentence. Looking for what to track in the first place? See the habit tracker ideas.

“But it’s too easy to count”

This is the most common objection, and the most important one to get past. One push-up feels like cheating. It isn’t, for three reasons:

• You’re building the habit, not the result. At the start, the goal is the automatic link between a moment and an action. The fitness, the books and the calm come later, from the normal version on the days you have it in you.
• The alternative isn’t twenty push-ups. On a hard day, the real choice is between one push-up and none. One keeps the habit going; none starts a new pattern of skipping.
• Easy is the point. If it feels too easy, the habit is doing its job: it takes almost no willpower, so it survives the days willpower runs out.

If you still want more, do more. Just don’t change what counts. Doing the minimum is a full day, not a partial one.

How to grow a tiny habit

Grow the habit once it runs on its own: when you do the minimum without having to remind yourself, and skipping it feels odd. Fogg’s one-tooth flossing habit grew into flossing all of them. Some tips for growing yours:

• Raise the normal version, not the minimum. Keep the worst-day version tiny forever. That’s your safety net.
• Grow by a notch. From one page to five, not from one to fifty. If the bigger version starts to feel like a chore, go back a step.
• Let the habit grow on its own first. Often it already has: you’re regularly doing more than the minimum without planning to. Make that your new normal.
• Add one habit at a time. Once one habit is automatic, it can become the cue for the next.

If you stall or start skipping, the fix is usually to make it smaller again, not to push harder. And if you miss a day along the way, here’s what to do the next morning.

The short version

• Start with a minimum version so small you can do it on your worst day: one page, one push-up, shoes on.
• Habits form through repetition in the same context, and simple actions become automatic faster than elaborate ones.
• Keep two versions: a minimum that always counts, and a normal version for good days.
• “Too easy” is the point. On a hard day, the choice is one or none.
• Grow the normal version by a notch once the habit runs on its own, and keep the minimum tiny.