Or is it just that you are not willing to really really commit to wanting the loss more than the food at that moment. If that is the problem and the food wins, you need to convince yourself to commit or you will never get there. If you are hungry, eat - legally. If it is a matter of wanting that instant gratification, then the problem is your head, nit your stomach.
I have been there many times. The committing is the hardest part.