@JessLynn , another possibility is hypnotherapy. It might help the eating disorder.

Also, I think people often use the planning and visualizing of suicide as a way of escaping temporarily. I used to think "I can always commit suicide and then I won't need to solve these impossible problems." Another thing I would think is "I have failed and I deserve to die as punishment."

Instead of thinking about my "impossible problems" I can think about "problems I solved in the past and how those might apply to current problems" or something. Instead of thinking that "I have failed", I can think that "I did not do as well as I had hoped in this or that particular case but I did do well in another case". This would reduce the bad feelings that we use suicide fantasies to relieve. Choosing the words to think isn't telling lies to yourself - it is avoiding negative generalizations in favor of accuracy, objectiveness, etc.