I will second "every shot must have a purpose"..... I took Buckets suggestion, actually I think he said "after you read it, you'll think Rotella is a pasta." He was right... this is imo the best book for the mental side of the game I've read.
Amazon.com are running a promo on "Every shot must have a purpose" by Pia nilsson & Lynn Marriott and "Fearless Golf" by Dr. Gio Valiante as a package @ $28.90.
are both execellent books to get you to start playing Golf on the course rather than playing golf swing or WWPTOM (what will people think of me!) (3-B)
I would like to add to the list a book by Chuck Hogan - Rethinking Golf. The backcover has states like;
" The book is the most up to date perception on learning and teaching golf in print today. There isn´t any golfer at any level that cannot substantially benefit from this book." and so on......
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Golf is an impossible game with impossible tools - Winston Churchill