Bloated

I always overorder!
I want pizza. A medium will do just fine for two or three meals, but what do I do when I order? Get a large! Why??!! There's something about that moment when I'm asked what I'd like, and I just kinda panic.
I know a big part of my food issues has to do with fear of being hungry, and I've gotten portion sizing under control--I've mostly stopped over eating at meals--but I still overdo it with ordering!
Now I have a big, expensive pizza heading my way. Sheesh.