
I just finished reading Every Shot Must Have A Purpose, by Pia Nilsson, Lynn Marriott, and Ron Sirak. It took me a while, because, well, it's not that great of a book.
Here's my review:
This book is focused on the mental and emotional approach to golf, as opposed to swing mechanics. I think that's great. You can pick up some useful insight, and hopefully you can get advice on your swing mechanics in person from a qualified instructor (definitely the best way to go).
The authors give some good advice on how to approach the game. They talk about a "think box" and "play box," which are useful concepts. I picked up a good slogan, "achieve and leave," which I now say to myself when I start getting compulsive on the practice range.
The bad news is that I found the writing to be full of gimmicks and advertisements. They use a lot of UPPERCASE LETTERING for emphasis which drives me crazy because I feel like they're shouting at me (okay, I may have some personal issues here...). They went so far as to trademark the name GOLF54, and they shamelessly promote their schools and some pseudo-science nonsense called HEARTMATH.
If you're looking for a good book on the mental game, check out Golf Is Not A Game Of Perfect (Bob Rotella), Fearless Golf (Gio Valiante), or Extraordinary Golf (Fred Shoemaker).