I'm in the same situation you are, dealing with the exact same depression issues. I think what Ive slowly come to learn is that I simply needed to get away from my startup for a while to refocus and think about how to continue.
Exercise also seems to help beat the blues. My happier days are when I take a day off of work and walk around the exploratorium.
Exercise also seems to help beat the blues. My happier days are when I take a day off of work and walk around the exploratorium.
Take breaks, and get some physical activity.