Wilso, depression is little understood and accepted in this culture. I mean, if you told one of your professors you had to hand a paper in late because you had the flu, it would be acceptable. If you told them it's late because you were depressed they would tell you to "get over it." Depression is falsely viewed as weakness or lack of discipline, which it is not.
I agree with slappy about excersise. There is a book a doctor gave me to read a few years ago which talks about foods that are compatible with your blood type. Depending on what your blood type is... I gave up being a vegetarian because I feel so much better when I eat some kind of animal protein.
http://www.dadamo.com/napharm/store3/PJDstore.cgi?user_action=detail&catalogno=ED002
Here is the link, it may help.