Harshaw

I agree with the "seek out help from your school" idea. Most universities realize that a huge number of their students are going to be depressed from time to time.

If it is something that doesn't happen a lot, you may want to find things that help make you happy. I've been depressed a lot, and I find nothing helps like a walk. Doing something active lets endorphins out in your brain. This will pick you up for a little while; it may pick you up long enough for whatever bad feelings you have to go away.

Edit:

If all else fails, I have this story my girlfriend told me when I was down once.
A mighty king called for all his wise men. They gathered around him and he said
"I require a device that will make me happy when I am sad, and sad when I am happy."
The wise men thought for a while and crafted a ring for the mighty king. On both sides of the ring was engraved
"This too shall pass"

I find this story to be really useful when I am depressed. Currently, I am going through the worst months that I have faced in my adult life. Making it even harder is the fact that just 2 months ago, I was happier then I have ever been before. This story goes to show that, well, what goes up, must come down.. and the other way around.

__________________
This too shall pass.