Motion changes emotions
This is one of the things I've read about and also seen in action. It works for me and I know it works for others.
If you can get yourself to move ... physically move (walk, jog, run, jump up and down in place) your emotions will change and you will feel better.
Motion has an affect on our mood as well as our physical being ... when you start moving you take in more oxygen, which feeds your brain and just makes you feel better.