On the other hand: there's an infinite amount of things you can't/won't do in your life, vs. a finite amount of things you will do. Don't spend your time worrying about all the things you haven't done: that gets in the way of actually doing things.
On the third hand: of the infinite amount of things you can't/won't do in you life, there is only a finite amounts of things you want to do, and you won't regret not doing things you don't want to do.
