The 21-Day Habit Myth: Where It Came From
The 21-day rule came from a 1960 plastic surgery book, not a habit study. Here is what was actually written, how it got mangled, and what it costs you.
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How Long Does It Take to Form a Habit?
The 66-day figure everyone quotes is a median, not an average, and it describes 39 people. Here is what the research actually found, limits included.
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The Habit Loop Explained: What Each Part Does
Cue, craving, response, reward. What each part of the habit loop actually does, where the model came from, and how to find the link that keeps breaking.