Unfortunately it's also the only advice that works, in a trite and tautological way. You either find the willpower (in the addiction research it seems that some sort of "religious awakening" or "higher purpose" seems to be key) or you struggle with your addiction to the end.

The comment elsewhere about HAVING to eat was eye opening to me. For some reason I never made that connection - the cocaine addict doesn't have to do just a tiny line a few times a day. They can kick it permanently. A food addict has to face their temptations every meal...