In Good Habits, Bad Habits, Wendy Wood reveals how nearly half of our daily actions are driven not by conscious choice but by automatic habits shaped by our environment and unconscious mind. Drawing on three decades of groundbreaking research, she explains why willpower alone so often fails and how real change happens when we work with—rather than against—how our brains are wired. Blending neuroscience, case studies and practical experiments, Wood shows how habits form through cues, rewards and friction, and how we can use this knowledge to build better routines and break harmful patterns. Clear, accessible and deeply practical, the book offers a powerful framework for making lasting positive change in everyday life.