I used to live worried about everything or better to say, about anything. The lesson I learned is that worrying won’t fix problems: worrying itself is the problem.
Past is unchangeable, Future is unpredictable, Present is the only thing you have, you should only be occuppied attending your current next 30 minutes of your life, that it’s what’s in your control, only. Forget about everything else, just this present half hour of your life, live it to the maximum, do it with perfection, be grateful to God for this moment and enjoy it, do it right, write it right in your life’s invisible book. That simple it is! Smile!