I find it hard to stop purging as well. What I did was - I started out purging about 4 or 5 times a day. After a few days i'd try to go down to 3 times, then 2, then eventually one. However, it wasn't really that beneficial - I just didn't eat any more than that many meals. It is good though, if you eat a lot of fruit throughout the day. It's very low in calories, and apples, for example take a while to eat if you chew them a lot. Apples are my savior. Blueberries are extremely low in calories and tasty. Eat those. You won't need to throw them up.
I've had an e.D. Since I was about 15 - so 4 years. I started out w/ a diet pill/exercise obsession - then anorexia, then a combination of ana/mia/diet pill and exercising. You're right, it is hell. Vitamins a must ? Yes...Make sure to take a multivitamin and a calcium supplement. We're both going to get osteoporosis if we don't. Try to get a little potassium as well - or your body will get even more f'd up and you'll be risking your life. That's where i"m at. They want to hospitalize me because i'm so f'd up. Take your pills!