Actually this is a topic that fascinates me. While browsing the books about survival in our nice public library I came across the book Deep Survival and I want to read it thoroughly. I've read parts of the "rules of adventure" chapter at the end of the book and the author mentions among other things, the Kum Do's four poisons of the mind (fear, confusion, hesitation and surprise) and Marcus Aurelius and the Stoic philosophers. I thought it would be worth mentionning it and I guess studying these philosophers could help prepare your mind to be detached from pain and stuff like that. It's interesting.

François