Any ideas on how to break a b/p cycle?

I've been bulimic for 4 years.. I know recovering takes time, but I want to start with not purging anymore. I can barely keep food down. As soon as I eat my mind goes blank until I realise I've binged and then...yeah. I'm tired. I can't do it anymore, not only for my mental sanity, but for my body. My teeth are hurting, but my mind doesn't cooperate with me.

So if you broke the cycle, can you tell me how?

Even cheering would be nice... My days have been full of negativity lately