^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.^