How do I help my anxiety when I have other mental health issues that prevent me from doing so?

I have recently begun to seek help for my depression/anxiety. It's always been a part of my life in some way, but I have developed certain coping mechanisms and have told myself that it's "not a big deal" and that I'm "just being dramatic". It's gotten to a point that I can no longer ignore, and I am frequently unhappy.

What makes this difficult is that I also have an eating disorder. This makes certain HEALTHY coping methods difficult, such as working out or eating properly.

Is there someone out there that has experienced this, and knows of something I can try?