I talk to myself. "Thine. Cheer up. There's really nothing to be so sad about. Yes. Yes, I know you feel sad, but it's really okay. Smile. Now. Just do it. See? Was that really so hard? Now find one thing to be positive about..." and so my inner T chatters onward until I tell her to shut up. Sometimes I listen, sometimes I don't.

I also listen to music. I love music and something happy and energetic sounding can sometimes snap me out of it.

Doing something. Anything. Especially if it gets you up and moving around.

Playing the piano. This helps me to focus and just relax and forget how poorly I'm feeling.