I know from the many testimonials I've seen that this is a great book for many people. It is not a "diet" book, but a way of looking at your life and deciding how the "body clutter" got there and how to go about helping it get off your body. Since I am not really interested in delving into those emotions, I am glad to give it to someone else.
If you are already fairly knowledgable in nutrition and exercise, then this book is probably a little too "baby step" for you. I feel it is for the real beginner just starting to learn to "love themselves." Excellent book, but things I already knew.
I love Flylady's system for maintaining my home but I found this book to be more of a synapsis about the authors' experiences with weight issues. I commend their bravery though in sharing their stories with the world and they do have some helpful ideas in it.