1. Solve the Problem
Is there anything you can do about the problem right now? Is it fair/reasonable? Will it make things better?
2. Change your perception of the problem
Shift your focus to what you can do to cope with the situation.
3. Accept the situation
Accepting the situation doesn’t mean you agree with it, but it’s another way to change the way you react to it.
4. Stay Miserable
This may not be the best decision, but if you can't do 1-3...
Lighten Up Your LIFE