Angel has a good idea with the sticky notes and as for the whole "voice" thing, at least for me. It's not technically like a whole other voice, but what it is is your mind telling you that you don't deserve the food, or you don't need it, or even things like it doesn't matter you're already fat and how could you have eaten that? Go get rid of it. Basically it is your thoughts, but if you didn't have the
ED, you wouldn't be thinking like that, and that's why people call it another voice, because technically, even though it is how they think, it's only because of the
ED.