Tracy quotes Elbert Hubbard to define self-discipline as “the ability to do what you should do, when you should do it, whether you feel like it or not.” He tells you how to employ self-discipline in 21 well-organized, easy to follow chapters. These chapters are clustered into groups of seven, which in turn make up the three parts of the book. Part I covers self-discipline and personal success. This part covers things like goals, courage, and persistence, and how self-discipline helps you master them. Part II tells you how to use self-discipline in business, sales, and finances. Part III talks about quality-of-life issues like personal health, fitness, and marriage, and how you can use—you guessed it—self-discipline to achieve success in those areas. Each chapter features a number of end-of-chapter exercises to get you moving in the right direction. Unlike many other books I’ve read, these exercises are good. Tracy truly helps you figure out where you are in each area of your life, and what you need to do to find success. If you do all the exercises in the book, you’ll make book worth your time and money