Park City, Utah
I learned two things about mountain biking:
When you squeeze your front brake too hard it's a bit like "tripping" yourself and you go flying over the handle bars
If you focus on the rock that you don't want to hit, you hit the rock. It's better to focus on the the dirt next to the rock. That sounds like a life lesson...
Also, there are two kinds of mountain bikers... those that ride up the mountains(the triathlete types that have the proper biking gear) ...