OK first off - my review is NOT based on just reading the book and thinking 'Oh that sounds wonderful'. I read the book 6 months ago and now I weigh 28lbs less than I did then. So I'm writing with that experience to back up my thoughts here!
First of all, this book is NOT a diet book; you have to choose two diets to use with it (they have to be healthy diets, which aim for a 1-1.5lb loss per week, not a crash-diet). This book aims to give you the psychological tools that you need to succeed with the diets you have chosen.
The two diets I used were: 1. WeightWatchers online (that was my primary diet) and 2. Audrey Eyton's F2 diet (that was my 'back-up' plan for when I couldn't count points, as the WeightWatchers diet requires you to).
So - this book is a step-by-step, 'deal with your obstacles' course: it teaches you how to deal with sabotaging thoughts such as 'It's my birthday, I DESERVE a treat', or 'Just one biscuit won't matter'. It also teaches you that hunger is not an emergency! One day, you even have to go without food between breakfast and dinner, just so that you learn that you won't die from hunger. You also have to write everything down that you eat (that's true on the WeightWatchers programme too), and plan what you are going to eat the day before. A big lesson that I learnt (sounds very obvious, but it's true!) is that life ISN'T fair - there ARE some people who can eat a lot more than me and stay slim, but I can't: tough. If I want to be slim, I have to accept my limits.
I didn't stick to all of her advice, but I certainly used a lot of it to help me stick to WeightWatchers when I felt hungry, bored, fed up etc; etc;. And now I'm 28lbs lighter and ready to embark on the 'maintenance' phase.
I would definitely recommend this book to anyone who is serious about losing weight and who is prepared to tackle some lessons which at first sight may sound rather strange, but which actually do help you to stay the course.
Good luck to everyone else!