The book begins by tracing the historical context of behavioral psychology and detailing the core principles of habit formation. It then guides readers through identifying existing habits, categorizing them, and dismantling negative ones through trigger avoidance and reward substitution. Later chapters focus on building positive habits using habit stacking and environment design. By drawing on case studies and experimental research, Behavior Patterns offers a scientifically grounded framework for sustained behavioral change and improved decision-making, empowering readers to take control of their behavior and enhance productivity.