In general, I find playing a bit depressing. Mainly due to novices. Normal novices are fine, it's the fools and the ignorant ones that bug me. So I've found out a little trick. Play happy music in the background.

Hellsing Uhh Ehh Uh Ah Ah Ting Tang Walla Walla Bing Bang
http://www.youtube.com/watch?v=wGm_CljevTk

Alucard and "I'm too Sexy." (Makes me chuckle a bit.)
http://www.youtube.com/watch?v=yUap-z1mLkY

This guy is called the scatman. Apparently it's a method of speak/singing stuff very quickly.
http://www.youtube.com/watch?v=qpkLnZp7l1E

Moral of the story? Music can be used to influence moods. Dark music makes you gloomy, while the more heavy metalish music can make you bit more brash.

Do the right thing, listen to the funny stuff. It'll keep you sane.