The best answer to anything you’re worried about is to: a) Quit complaining about it b) Break it down into fixable/unfixable parts c) Do what you can to fix the thing you’re worried
about d) the parts you can’t fix, prepare for, then e) accept it and
move forward. Tackle each worry in this fashion and you’ll gain peace
of mind. Shut up, Break it down, Fix, Prepare, Accept, Repeat.
It’s true – you can drive yourself crazy really quickly if you don’t do those things. Everybody has worries and concerns but you have to tackle what you can in some fashion, let it be, and move forward otherwise you end up going in an endless worry cycle. Great analogy is a “feedback loop” – ever hear the nasty sound you get when you put a microphone too close to a speaker? That squealing is exactly like what happens inside of your brain.
What sometimes helps too when you’re stuck in an emotional feedback loop, is ask yourself, “How would this appear if you had a newspaper reporter standing there, interviewing you, with the cameraman shooting video?” Nothing straightens you up faster than imagining you’re being watched. (of course, that can lead to paranoia if taken to the extreme, but for regular folk, it’s usually enough)