"The Champion’s Mind is a mental training book that will help you reach your potential in sports. I highly recommend this book to all athletes and coaches."—Jackie Slater, NFL Hall of Famer
With Winning in Mind is the book that most people go to in climbing circles for mental strategies. A good book to have in your library for sure.
This book, The Champion's Mind: How Great Athletes Think, Train, and Thrive (Amazon), also seems to be highly regarded (and the testimonials are hard to fault)- might be the ideal Christmas present for yourself or someone you know!