"Mindful meditation, yoga, and cognitive-behavioral therapy are extremely helpful for people with mild to moderate depression. But they don't work for people such as yourself who are suicidal or severely depressed."
I've read in a book (a Dale Carnegie Book) that to stop being depressed is to divert your attention to more useful things like helping others, get busy, think or read positive thoughts. An article from Beliefnet also says that it's 'mind over matter'. So it is.
I've been there. And it was ugly. You always feel fear, at times, it seems to seep too deep it manifests itself physically (thus the psychological pains or 'somatization as they call it), wasting time and money going through different doctors and getting into the trauma of tests to see any abnormalities (thanks God there's none) and going over and over again. Hypochondriac if you may. But, over time, it helps to think and push yourself to see positive, think positive and be positive. Mind over matter, really. (Somatization source: Wikipedia)
When you think you are, then you'll be.