I suggest Substituting Inedible Nurturance, or SIN. Don't replace overeating with virtuous work or exercise; instead, make a list of things you love, from watching TV to hanging out with favorite people.
It takes about four days of virtuous living to create a little weight loss. That also happens to be the time required to get used to eating less. In other words, if you can get past day three of a fitness regimen, things improve.