You have probably started the same habit more than once. A morning walk, an evening stretch, a glass of water before the first coffee. Some weeks it runs almost by itself. Then one busy week later it is gone, and it feels like starting from zero.
Why do some habits settle in while others quietly fade, even when we want them just as much? For a long time the short answer was: repeat it often enough. That is still true. But it is not the whole story.
What a habit actually is
In psychology, a habit is not simply something you do often. It is a behaviour that has become linked to a context (a place, a time, a previous action) so that the context triggers it without much thought (Wood & Neal, 2007). The key word is automatic: you no longer decide, the situation does.
That link is built by repeating the behaviour in the same situation (Gardner, Lally & Wardle, 2012). In the best-known study on the topic, it typically took about 66 days for a new daily behaviour to feel automatic, with huge differences between people and habits (Lally et al., 2010).
What the new research adds
In 2026, a team including two of the leading habit researchers, Phillippa Lally and Benjamin Gardner, published a study asking a simple question: beyond repetition, what helps a behaviour become automatic (Bürgler et al., 2026)?
They re-analysed data from a six-month study in which 254 people reported every month on a behaviour they were trying to turn into a habit, together with ten possible influences. Six of them were linked to stronger habits:
The researchers also saw two broad paths over time: for some people habits grew stronger, for others they faded. How complex the behaviour was, how often it was done and how stable the context was all played a role in which path people ended up on. In other words, habits are not a switch you flip once. They keep changing, and they need a little care, especially in the early weeks.
One honest caveat: the study took place during the COVID-19 pandemic and shows links, not proof of cause and effect. But it fits well with earlier findings. For example, people who exercised because they enjoyed it or valued it tended to have stronger exercise habits than people who exercised out of pressure or guilt (Gardner & Lally, 2013).
"A habit sticks when it's easy, regular and your own."
What this means for everyday life
Put together, the research suggests a simple formula: a habit sticks when it is easy, regular and your own, and when it feels good enough that you do not dread it. Here is how that maps onto the four steps we use on this site.
- 1. Notice. Look at a habit that keeps slipping and ask which ingredient is missing. Does it feel hard? Does it happen at a different time every day? Is it something you do because you think you should?
- 2. Shrink. Difficulty was the one factor working against habits. If a behaviour still feels like effort, it stays a decision, and decisions are easy to postpone. Make it so small that it feels almost too easy. You can grow it later.
- 3. Plan. Give the habit a fixed place in your day. An if–then plan does exactly that: "If I finish my coffee, then I step outside for five minutes." Same cue, same action, every day.
- 4. Adjust. Pay attention to how it feels. If you dread it, change the version, not your personality: a walk instead of a run, music you love, a nicer route. And after you have done it, take five seconds to notice what feels better. That small moment of feeling good is part of how the habit grows.
Try it this week
- Rate the difficulty. From 1 to 10, how hard does your habit feel right now? If it is above 3 or 4, shrink it.
- Fix the context. Choose one cue that happens every day and write your if–then plan.
- Add something pleasant. Pair the habit with something you enjoy, or simply notice how you feel afterwards.
- Write down your reason. One sentence: why does this matter to you, not to anyone else?
If everything has felt heavy for weeks and even small steps seem impossible, that can be a sign of exhaustion or low mood rather than a lack of discipline. It is worth talking to someone you trust or a professional. Habit tools are not a replacement for support.
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