Can't eat enough for working out?

I'm having a very hard time eating enough calories and I'm afraid of the negative effects of this. I weight about 172 with about 20% body fat. I've only been able to eat between 1,000 and 1,500 calories a day while doing kettlebell burn 2.0.

I'll be straight about this. The reason that I'm not eating is from extreme depression. The workout doesn't seem to be helping my mood, but it's not hurting it either so I would like to continue. it's 5pm right now and I still haven't eaten. I don't eat any junk food at all but I'm starting to wonder if it would be healthier to just have a slice of pizza or something here or there because it's so easy to eat. I often feel like I'm going to gag when I eat most things, even if I enjoy it. I always force myself to eating shortly before working out so that I have enough energy to do it. I'm also very sleep deprived as I can't sleep either. I'm sure someone will suggest that I get help but I'm already involved in therapy and will be starting medication again in a couple weeks.

I really didn't feel like explaining all of that, but I'm worried. I don't want to stop working out but I'm not sure if I'm even going to reap any of the benefits. Any suggestions?Can't eat enough for working out?
Hey, I thought I'd share this with you since I personally got good results with the program. I was able to burn 3% body fat and lose 15 pounds in 3 weeks, and I'm a slacker. Give it a try.