One of my favorite quotes is from Peter Drucker. "Most problems cannot be solved. And most problems are made irrelevant by success."
Drucker the management consultant was talking about companies tendency to put their best and brightest on solving problems rather than pursuing possibilities. I think that the idea applies more broadly.
You will always have problems. Always. If your focus is on "fixing" problems you'll inevitably feel frustrated. You won't. In addition, life is short. It is a waste of time to apply a scarce resource (your time) to unending problems.
Let go of your problems. Instead, try to grab hold of success. That's hard enough but at least it is a possible task.