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All writing Part 13 of 18 · Atomic Habits: The Systems Map
Discipline · 1 min read

Never Miss Twice

Missing once is an accident; twice is the start of a new habit. Never miss twice: an identity-maintenance rule that keeps one slip from becoming who you are.

Accidents are inevitable. The rule for keeping a habit fits in one line: never miss twice.

  • Missing once is fine, just don’t let it become two in a row. Once is an accident, twice is the start of a new (bad) habit.
  • Don’t punish yourself or deny your identity over a miss or two:
    • Someone who works out doesn’t decide they’re lazy after skipping a day or two.
    • Someone who eats doesn’t decide they no longer need to eat after skipping a day or two.

This is an identity-maintenance strategy: one slip doesn’t change who you are, a streak of slips does.

Once is an accident, twice is a beginning. Hold the “no two in a row” line and the identity won’t collapse.


References: Atomic Habits, James Clear

Related: back to the whole-book map; or read Identity: Who You Are Drives What You Do and Law 4: Make It Satisfying.

Tags #atomic-habits #habits #self-improvement
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