Well said...words to live by.I was taught 2 things at a very young age
1) If you can't change it don't stress or worry about it and you won't be dissappointed when the outcome isn't as you expected.
2) If it's broken then do something to fix it....don't stand there staring at it and hope it will fix itself, even if you fix it wrong at least you are trying..... and eliminated what could be a possibility.