I’m not in your situation, but when I’m sad this is what I do.

Go in your room or a quiet place, a place where you’re alone. Turn on some music blast it in your room or your ears. It should be semi-happy music with a nice beat. Then just look in the mirror and dance your fucking heart out. Even if you don’t dance, just shake, wiggle, or whatever. Let it out. :] 

Feel better.