I'm 40 and having more fun now than I ever had. My new years resolution is to not go to work stoned EVERY day. I play much harder now than I ever did and worry about a lot less. At some point I just stopped caring about what other people think and just started taking life on my own terms. When I do something it is because I want to, not because I think someone else wants me to.

Stay active and life will treat you much better.