I battle with clinical depression and am able to overcome the debilitation most of the time. This is because the depression is linked to MS. It's almost predictable in it's reappearance. It relates not only to the MS, but also to the worst stress in my life.
Right now I am again dealing with an exacerbation and resultant depression. Not coincidentally, one of the worst recurring stresses of my life is again making an appearance. At present I am unable to detail the stress, which is not work related, but at least I have tools to help.
Blogging is one of those tools. Not just writing, but also reading blogs. This blog, in particular, is especially helpful. I read it daily, addictively. The writer is that good. Recently she opened a thread of commentary, usually verboten, and now closed.
Many people say they've thought of going into the psychological sciences, either as a practitioner or in research. Not me. The inner strength required for that work is not one of my gifts. What psychologists are especially good at is listening and relating. That is the sort of thing found at Intueri.
If you are dealing with mental illness, bookmark it. When you are strong enough, visit. Sometimes it's disturbing, other times it's inspiring, but it is always a bit of a surprise.