Just "go with the flow" as they say. No reason to waste time worrying about something you can't do anything about anyway. I say enjoy this time as much as you possibly can. The fact that you have found something even slightly enjoyable in this life is amazing enough, many people suffer horrendously and die young without ever having known peace or leisure. More so with all the war and poverty in this world.
Be grateful and enjoy while you can.
When those stupid concerns well up inside, laugh and make peace with your own ridiculous ignorance and the absurdity of your own shortcomings. Hows that for some fucking good advice? I totally rock.