The chief cause of failure and unhappiness is trading what we want most for what we want at the moment.
I think about the binge sessions I have had and the times when I just eat because it's there and I know it tastes good. My signal to stop eating is "it's gone" not some inner switch that tells me "enough" and I quit. I am much better at using a smaller plate that I fill and eat all of it. It used to be "time" to eat and so I would eat. I am better about that one. I have eaten for all the wrong reasons. I then look with envy at those who look so nice in their clothes and look good in whatever they put on. That's what I want. Why don't I have it? I refer you back to the first statement.
“Never eat more than you can lift” - unknown :-)