I've read 'What I Talk About...' and it's more of a memoir, not a self-help book. If you want something practical, I'd recommend 'Can't Hurt Me' by David Goggins. It's a tough-love approach to building mental toughness.
One thing nobody's mentioned yet: practice your descending skills. Going downhill can be way more treacherous than going up, especially on technical trails. Start with small hills and work your way up to build confidence and control. And don't be afraid to take a few tumbles - it's all part of the learning process!
Bounce back? He got caught cheating and served a slap on the wrist. Let's not sugarcoat it.