■ A habit is a behavior that has been repeated enough times to become automatic. ■ The ultimate purpose of habits is to solve the problems of life with as little energy and effort as possible. ■ Any habit can be broken down into a feedback loop that involves four steps: cue, craving, response, and reward. ■ The Four Laws of Behavior Change are a simple set of rules we can use to build better habits. They are (1) make it obvious, (2) make it attractive, (3) make it easy, and (4) make it satisfying.
