I agree with some or many of the replies, and also, Happy Birthday.
I'm 41. In your next eleven years, things that used to be "rub some dirt on it" might become "I can hardly walk up stairs for a few days." But, some of that may have been poor decisions on my part.
Take care of yourself as best you can to make it less likely to shift that way, and also remember that you're less stupid than you were as a teenager, but you're still building wisdom through life experience.
With that, my motivational speaking career begins.