Hey there - I'm sorry that you're going through all of this.
I'll have to tell you that what got me out (and kept me out) of that funk was school, work and goals. I am in the human services and going into the hospital would ruin everything. Everytime I'm afraid of going back in I think - wait until next week, or next month or whatever and once I get there I just do it again. Right now things are really unsteady and I thought that I was going for sure, but I just keep working toward the end - the end of the semester, the beginning of a new summer job etc. What are things in your life that you can work toward? Think about how you're going to get through your next set of suicidal thoughts. Have an exact plan ahead of time.
You also need to think about why you "crave" going into the hospital so much. Perhaps you get some kind of satisfaction out of it? I don't know, nor do you need to tell me. Just think about it & always be brutally honest with yourself.

Good luck