I have because I went to a sleep school and it was the model they used. We bought the book afterwards and read it ... then I joined BB

It did work for us at the time but I take a very different approach to sleep and settling now then I did then. I still do use some of the things I learned from that book and program with my kids, but more to understand what is going on, not to do the control comforting part of it so much. There is lots of good information about sleep cycles in there which I think is really useful.

If you have any questions about the book, I am happy to answer them