I noticed this book at a bookstore, browsed through it, and was surprised to see some useful content. I bought it, then browsed in greater detail. Some of the information will be valuable in situations similar to the ones mentioned in the book. Some of the information will remain useless.I would rate this book with 3 stars; however, something irks me about this book. Every chapter -- and I'm not exaggerating -- every stinking chapter refers to mythical "studies" that are never referenced elsewhere. The phrases "Studies suggest...", "many studies say..." and "Studies have show that..." litter the book. Lieberman uses this ploy to make his opinions appear legitimize. This cheap trick does not go unnoticed.Because Lieberman uses the tricks of a con artist, I cannot bring myself to recommend this book to anyone. While I did find value in some of the information, I don't appreciate being snowed.