IME As soon as guilt is involved, be careful. I have been anorexic and when I got caught out not eating I became bulimic so people would get off my case.
I have dieted since and always known when I am treading thin ice, with me it's always been the emotions that attach to food, I'd eat something 'bad' and feel really guilty, for hours, so much so I'd either vomit, starve myself or do enough excercise to burn off those calories plus a bit more, also if I ate one say doughnut, I'd think 'I'll be sick in a minute' or do some excercise or w/e and use that as an excuse to eat more, so I'd end up eating 2 doughnuts and 5 slices of toast and a packet of crisps etc.
On a normal day, if I've been dieting I'll look at something I maybe shouldnt have and think either, I can have it, as long as I dont overdo it on other stuff (sensible) or ask myself if I really want it and substitute it (again sensible).
You should be proud of what you're doing, but realise it isnt the be all and end all to be dieting properly. Maybe give yourself a 'minimum' amount of points as well as a maximum number so you know you're eating enough???