The Inner Game of Tennis is the best book I've read on improving physical skills through mental performance.
I was a bit apprehensive that The Inner Game of Golf would be a rehash of those principles with little extra work, but was pleasantly surprised that the author took it upon himself to spend a year improving his own golf performance in order to write the book.
Not only does the book provide exercises that are immediately applicable (and I have personally found to help), but it explores why we place so much importance on golf and why we play.
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