Humans seem intent on noticing what's wrong within themselves (this human included) even when life in general is going well. I'm not talking about a To-Do list but gnawing on aspects of who we are that isn't quite right.
Maybe the whole - going back in a time machine thing might work - but not sure it would.
I think you're right. Better to look for the good in "the bad" and be at peace with it. Good piece!