Since you're embarrassed about talking about it, could you see yourself starting out by saying you're having problems with emotional eating? That's really common, so you wouldn't be putting yourself so "out there."
I'm a big emotional eater too, and the worst stuff - carbs and sugar. I eat mostly out of boredom. It's just something to do. Half the time (more like 75%) I'm not even aware of how much I'm eating.