Wow, that must have been awful. I think about some of the stupid things I used to do as a kid and it's a wonder I'm still alive. I'm much more careful now, I have that sense of mortality that most of us don't have when we're younger.
But then cancer can sneak up and smack you in the back of the head and you're gone in 6 weeks, so who knows. Try to live a life that you wouldn't look back at with regret, well, not too much anyway, we're all bound to have regrets, but ya gotta try to learn from your mistakes and try to be what you consider to be a good person.

Yeah, it's weird how you're reckless one day and then the next you wake up suddenly with the knowledge that one day it's all going to end. I suppose you call it growing up.