I am feeling better today than I did yesterday, and I realize that the one thing that changed was setting small goals for myself and achieving them. When I say small, I mean small - things like: make bed, buy book online, send email - nothing monumental just momentum-changing. Just enough to get the ship moving a degree or two in a better direction.
What small goals can you set for yourself today - that will move you in a better direction? Write it down, commit to yourself, and do it! I'm gonna do it to!