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Marginal Gains Blog

  • Stamping the word 'Myth' on a quotation of the 21-day habit myth, illustrating how it sets unrealistic expectations for behaviour change

    The 21-Day Habit Myth: What Science Really Shows

    BySimon Shaw 5 January 202626 April 2026

    The 21-day habit myth is one of the most persistent — and damaging — pieces of…

    Read More The 21-Day Habit Myth: What Science Really ShowsContinue

  • Calendar with X marks tracking daily habit completion showing time required to form a habit

    How Long to Form a Habit? The Real Answer

    BySimon Shaw 4 January 202626 April 2026

    If you’ve ever searched for information about building habits, you’ve probably encountered the claim that it…

    Read More How Long to Form a Habit? The Real AnswerContinue

  • person in workout clothes on sofa with crisps and remote control while running shoes and gym bag go unused — illustrating why willpower alone fails at habit formation

    Willpower and Habit Formation: Why Discipline Isn’t Enough

    BySimon Shaw 4 January 202616 May 2026

    If you’ve ever failed to maintain a new habit despite your best intentions, you’ve probably blamed…

    Read More Willpower and Habit Formation: Why Discipline Isn’t EnoughContinue

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