Mental training is scarcely covered in the climbing literature, yet it is as important to performance as strength, flexibility, and technique. In his unique approach to mental training, Arno Ilgner draws essential elements from the rich 'warrior' literature, as well as from sports psychology, and combines these with his extensive climbing experience to create The Rock Warriors Way.

This is the first book I've seen that addresses, in depth the inner game of climbing-and it's about time - Jim Bridwell.

From the introduction by the Author:

The Rock Warrior's Way is both a mental-training program and a philosophy of rock climbing that draws from the rich warrior tradition and literature. Its style is very different from what many people think of as war-like, being neither combative nor overly aggressive. Rather, it is a program of balance, harmony, and insight that is inspired by a peaceable application of ancient martial traditions. There are many books available on warriorship you might find useful. I recommend Way of the Peaceful Warrior, by Dan Millman and The Craft of the Warrior, by Robert Spencer as a start for anyone interested in fully exploring this rich way of thinking. The Rock Warrior's Way focuses on applying the warrior mindset to rock climbing, using ideas and exercises that have come from years of my own reading and research, personal experience on the rock, and work with my students in mental-training seminars.

Also see this UKC article by Arno on learning how to fall.