Sandler's book is a critical piece of the Sandler Selling System's overall training strategy. It shows you that training as a true sales professional is much like that of other highly successful professonals (i.e Doctor's, Accountants, Engineers, etc.). Training must be ongoing and lifelong for anyone to become the best. This book is a great part of the overall reinforcement element neccessary to fully "own" the unique, real-world and simple selling system originated by Sandler. Absolutely the best selling system out there.