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Atomic Habits by James Clear: A Critical Review
Atomic Habits is excellent at making behavior repeatable?and incomplete as a theory of change. Five seductive myths, audited against the evidence.
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Does Habit Stacking Actually Work?
TL;DR Habit stacking has been put to the test head-to-head, once. In a preregistered randomized trial, anchoring a new behaviour to an existing routine worked — and worked no better than anchoring it to a time of day. The if-then planning literature it borrows from is genuine but smaller than advertised: 0.36 across 642 tests,…
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The New Psychology of Self-Improvement
Learning, planning, and optimizing can quietly replace real change. The neuroscience of how self-improvement rewards your brain before you’ve done the work.
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Your Brain Never Deletes a Bad Habit
What Modern Neuroscience Reveals About Habit Persistence, Relapse, and Change TL;DR The 1% myth. Habits don’t form — or fade — gradually. The shift into automatic is a sharp, discrete jump: a “switch effect.” You can’t un-learn a habit a little at a time. Energy arbitrage. Your brain doesn’t see your bad habit as a…
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How Long Does It Take to Form a Habit? The 21-Day Myth vs. the Data
The 21-day rule came from a plastic surgeon’s recovery notes. The real data — 12 million gym visits analyzed by machine learning — says weeks to seven months, and the calendar was never the mechanism.