This book (in conjunction with "He's Just Not That Into You") broke my belief that I was worthless. It showed me some practical steps I could take in order to wait for a man who thought highly of me. I read this book when I was 40 and had just finished a 4 year relationship with an unemployed waster who bullied me and eventually pushed me over and raised his fist ready to punch me in the face. The only other relationship I'd had was a one-year relationship with another unemployed waster, but who was a sweet man simply going nowhere. All my other "relationships" were one or two week affairs where I would drop everything and be at the man's beck and call.
I transformed myself and my life and, feeling very embarrassed and self-conscious and thinking that no man would bother to wait for me if I wasn't readily available, I nevertheless followed the rules. The most beautiful and perfect, kind, lovely and successful man wooed me, and we are still together and so very, very happy after 4 lovely years. I still struggle with a lack of confidence but he has helped me to know that despite my reservations, I am really worthwhile and I'm about to set up my own business.
I can see why people criticise this book for suggesting that you play games, or manipulate men. But for me it was simply showing me in a practical way how I could act to give the impression that I had some self-respect, and as a result I was treated with respect, and grew to have self-respect.