This is by far the best parenting book I have ever read. The book is well researched and Weissbluth is smart, knowlegable, and compassionate. This program works. We had four people recommend this book to us. We read the book when our baby, Rachael, was born, and we followed all of the advice in the book. Rachael has been an excellent sleeper, and the whole family is well-rested. People actually don't believe us when we tell them how well our child sleeps. Everyone comments on how happy Rachael is. It is just an incredible book and will put a lot of things into perspective for you. I highly recommend this book.