"How to Build Good Habits & Break Bad Ones" is a practical guide on how to change your habits and get 1% better every day. It introduces the Four Laws of Behavior Change, providing a simple set of rules for creating good habits and breaking bad ones. The process of building a habit can be divided into four simple steps: cue, craving, response, and reward. Breaking it down into these fundamental parts can help us understand what a habit is, how it works, and how to improve it. The cue triggers a craving, which motivates a response, which provides a reward, which satisfies the craving and, ultimately, becomes associated with the cue. Together, these four steps form a neurological feedback loop-cue, craving, response, reward; cue, craving, response, reward-that ultimately allows you to create automatic habits. This cycle is known as the habit loop.