I'd wager that depression is merely a symptom of learned helplessness, a natural response to being repeatedly powerless in circumstances one is vested in the outcome of. A result of being repeatedly and extremely frustrated, and/or being in circumstances of great cognitive dissonance despite ones attempts to resolve it.
It seems to me the best way to fight depression, is to contimually distract yourself (particularly with an activity you can control), from whatever is depressing you. As if, by being busy, so much, that you end up forgetting about those depressing things. I know it's easier said than done, but to me, it seems to work if you're able, whereas focusing or dwelling on the depressing things, seems to further depression.
It seems to me the best way to fight depression, is to contimually distract yourself (particularly with an activity you can control), from whatever is depressing you. As if, by being busy, so much, that you end up forgetting about those depressing things. I know it's easier said than done, but to me, it seems to work if you're able, whereas focusing or dwelling on the depressing things, seems to further depression.