Accountability!

Help!!
I need support and accountability for my overeating.
I need to stop rationalizing, but I don't know how.
I can't seem to find support with my friends.
I have always been the fat one they can go eat with and not feel guilty because at least they are not as fat as me.
Just this morning alone, I have been approached by a handful of colleges to go check out all the goodies in the staff room. It has taken evey ounce of will power not to go 'check it out'.

I need support and don't have any!!!