Atomic Habits
James Clear's 2018 habit-engineering book — the dominant self-help text of the 2020s and the source of '1% better every day.'
Origin
James Clear built a long-running email newsletter on behavior change and condensed it into Atomic Habits (2018). The framework is four 'laws': make it obvious, make it attractive, make it easy, make it satisfying — invert each to break a bad habit. Two ideas did most of the cultural work: 'habit stacking' (attach a new habit to an existing one) and identity-based habits (decide who you want to be, then do what that person would do). 20+ million copies, and the most-read business/self-help book of the early 2020s by a wide margin.
Modern usage
The base layer of modern productivity content. '1% better every day,' the 'two-minute rule,' 'environment design,' 'never miss twice' — all from this book. Quoted by gym influencers, Notion-template sellers, startup founders, and parents trying to get kids off screens. Effectively replaced [[7-habits-of-highly-effective-people]] as the default 'serious person's habit book.'
In the wild
You do not rise to the level of your goals. You fall to the level of your systems.— Clear, 2018