Sometimes an ED can be regarded as a form of SI. It is very much harmful to the self...also you mentioned that it is the only thing you have control over. Control is often a main trigger of ED, take a closer look at your life. We are only human, and we overlook the littlest things that can mean so much sometimes.

I agree with MountainGirl, talk to your doctor. It's great that you have moved away from the SI, please though just try not to move onto anything equally or more dangerous to yourself.