Summary
Clear argues that goals don't drive long-term success — systems do. Habits are the compound interest of self-improvement: 1% better every day produces a 37x improvement over a year. He breaks habit formation into a four-step loop (cue, craving, response, reward) and offers practical levers for each step. Identity-based change is the engine: instead of trying to do something, become the kind of person who does it. Environment design beats willpower.
