The introduction to "Breaking the Habit: A Step-by-Step Guide to Quitting Bad Habits" sets the stage for the importance of quitting bad habits. It highlights the fact that we all have habits, and that habits can be both good and bad. However, the book focuses on the bad habits that we would like to break. The introduction explains the science behind habit formation and why it can be so hard to break a bad habit. The section goes on to emphasize the benefits of quitting bad habits, which include improved health, increased productivity, and enhanced self-esteem. The goal of the book is to provide readers with the tools and strategies they need to successfully quit their bad habits and start living a happier and healthier life.