How Small Habits Become Easier

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Text to type: A cue is a small signal that tells your brain, "Time to do this now." It can be a time, a place, or an action you already do. Researchers Lally and colleagues at University College London studied 96 people who tried to build a new daily habit. Each person chose a clear cue, like "after breakfast," and then did one small action, like eating a piece of fruit. When the cue was the same every day, the action became automatic faster. A weak or changing cue made the habit much harder to keep.

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Text to type: Doing the same small action after the same cue, day after day, is called repetition. In the same study, the action felt more automatic each time people did it. At first, the line on their chart went up quickly: the second and third days felt much easier than the first. Later, the line got flatter, but the habit kept growing. On average, people needed about 66 days before the action felt truly automatic. Some habits, like drinking a glass of water after breakfast, became automatic in around 20 days. Harder habits, like doing 50 sit-ups after coffee, took much longer.

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Text to type: A tiny action is easier to repeat than a big one. Imagine two people who want to read more. Maria puts one book next to her coffee cup every night. Her cue is "after I pour my coffee in the morning," and her action is "read one page." Tom tells himself he will read for one hour every day. On busy days, Maria still reads her one page, so her habit grows. Tom often skips his hour, so his cue and action never connect. Small actions win because they still happen when you are tired, late, or not in the mood.

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