I think my problem with over eating is that it was a learned response to everything.
Whenever my brother was sad, Mom would give us ice cream to make him feel better, bullied at school,she'd make a big pan of cinnamon rolls.
She never wanted to deal with emotions herself and taught me the same coping mechanisms. Mom and I never stopped at one roll or 1 scoop of ice cream, we'd polish off the entire carton or pan.
Mom would always trying to entice my little brother into eating because he was a super picky eater. He would stop when he was no longer hungry with reasonable amounts of food. Mom felt there was something wrong with him and would buy his favorite foods and if I tried to eat some it was always, "you can't have that, I bought that for your brother." or "that's not for you."
So it got to the point that if she bought something good, I'd hurry up and eat it so I'd have some and not have to share... Ok, so slight selfishness problem that I hope I grew out of. Wow, I haven't lived at home for 25 years and I'm still working on this.
Isn't it amazing what they consider portion sizes? I picked up a snack size nuts and dried fruit bag out the vending machine thinking max it was 2 servings-it was going to be lunch so I figured I'd factor in the calories. Wrong, I read the back and that little bag was 4 servings of 160 calories each. And it's so easy to down over 1000 calories without thinking about it.
The one day at a time approach-sometimes I go further and think one minute at a time. Just for this minute I'm not going to do that.