This is just me, but, when I feel depressed I do something. Take the bike out and go for a spin, read something funny or watch cartoons, head out to the garage and make something - anything to keep my brain and/or body occupied. I've learnt to not sit around thinking about whatever happens to be getting at me.
This works for me, maybe it will for you.
(I'm not as good as Dr. Phill, but I'm cheaper.)
