My advice is to live your life as best as you can without worrying too much about things you can’t control. Try and build a life around yourself that’ll help you be happy through it all, regardless of what happens. Enjoy your 20’s. 30’s are good too and 40’s don’t suck either.
To paraphrase Sun Tzu: do not choose a path to victory. Instead, choose a strategy such that all paths lead to victory.