You won't always be burned out and run down by trying to change the things that you can't. Save that strength for things hat you know you actually can change. Forget the things that you can't because they are only going to worry and and stress you more.
I often wonder if we as humans have become too 'reachable'. That is to say given the highly accessible nature of the internet are we allowed to 'log off'. I often feel paralyzed with anxiety over the expectation for participation in digital society.