“Smile

That’s right, smile! The simple act of smiling has been shown in scientific studies to literally change a person’s mood. We obviously smile when we ARE in a good mood, and it appears that our brain responds in kind to the physical act of changing your facial expression. Try it…it’s pretty amazing!”

Via http://leftofzen.com/mood-change/2008/01/10/

Kind of an interesting concept… If you’re happy, you smile, right? So when you’re not happy, try smiling, and it will bring you up. Good fun.

The site I got this from, Left of Zen. It’s good reading, I’ll be writing about things I read there in the future, I’m sure.