How can I get back to healthy eating?

I’m a recovering bulimic. Lately I’ve eaten nothing but junk food. Seriously, all I eat is candy and junk. Then I drink a ton of diet soda and throw it up so I’m not gaining weight.

I used to be so healthy! How can I get back to healthy eating and eliminate the junk? I don’t know what to do, I just crave sweets so badly.

Thanks.
I’m 5′4 and I weigh between 110 and 115. I want to weigh 105.