This book changed my approach to golf. For years while I was younger as a caddie and playing golf in school I was a power game player and a decent putter. The rest of my game was an after thought. I had a number of good games but I was far from consistent. After reading this book a few years ago and then reading his other book on putting my approach to the game evolved.
Getting off the tee, while important for obvious reasons, was so far less important than getting it in from ~100yards from the pin. I attended one of his one day clinics in Chicago and have religiously practiced my short game at a local multihole range ( Boilingbrook practice facility in suburban Chicago ) and as a result my game is predictable and consistent. When I stand over a 65yd wedge shot I understand all of my options using the 4x3 wedge system. The mechanical nature of the 4x3 gives you the confidence you need to play under pressure but to say that it doesn't require feel and control is crazy.
I highly recommend this book and the other Pelz books to everyone.