Habit Tracker (Streak Calculator)
Track a habit\u2019s current streak, longest streak, and consistency rate over a given window.
Inputs
Current streak
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Completion rate
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Days missed
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Next milestone
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Expected next month
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About Habit Tracker (Streak Calculator)
How long to form a habit
Phillippa Lally\u2019s research (2010) found a range of 18-254 days, with an average of 66. "21 days" is a myth. The right number depends on the habit and the person.
Don\u2019t miss twice
James Clear\u2019s "Atomic Habits" rule. One miss is an accident; two in a row is the start of a new (bad) habit. If you slip, get back on the next day.
Make it easier
Lower the activation energy: clothes by the bed for running, book on the pillow for reading. The smaller the habit, the higher the consistency rate.