Caligirl you did not ruin your diet. You made one mistake. I've made several on this woe. Yours wasn't even an intentional one. Toss the rest of the cheesecake out, and immediately--not tomorrow but now-- eat clean. I honestly think that the reason I have failed in the past was because it was an all or nothing thing for me. If I ate one thing that wasn't on the plan I was on I just threw up my hands and said screw it I failed I'll start fresh tomorrow. Only that tomorrow never came and I ended up gaining 30 more pounds before I found Atkins. You've lost 20 pounds so I know you know what your doing. There is a tendency to want to beat oneself up for a misstep I know but really that kind of thing will only hurt you. If you want some friendly advice do this. Act like it never happened and move on.

Gabrielle