Honestly I am having a tough time now too. One thing I am really struggling with is food. When I am not in a good place I just eat junk, junk, junk. I get lazy about cooking meals and want to eat out all of the time. One thing that helps a little bit, as much as I absolutely HATE to admit it (and even more despise to act on it) is exercise. My husband dragged me out for a jog last night (I use the term jog quite loosely) and this morning he made me get up and do a workout on TV with him. It is SO hard to get started, but I feel like I'm always glad I did it when I'm done. I'm pretty out of shape so don't think I am some workout junkie preaching to you! Even just a walk helps.
I hope you feel better soon. It is a tough place to be.