I've never been big on the "treat will cheer you up" mentality. I'm not even big on rewards. At least for myself. Last week when I had my big evaluation project due I listed three things on a piece of paper I would do for myself after it was done. That was six days ago. I've still done none of them. Part of this is because I don't really think I deserve treats. What did I do that I need a treat? I barely get done what I need to let a long extras? Part of it's because I know myself and I know not much makes me actually feel better, so I know a treat is pointless. Now, that doesn't mean I don't indulge in donuts. I'm just saying I know they won't make any difference. At all. Except in fatness and sugarness.
Gretchen Rubin writes about the Myth of Treats on her blog, The Happiness Project.