Big ol' helping of dietetic Humble Pie

My own bravado came back to bite me in my now-leaner backside.
Yesterday morning I weighed myself and was super pleased to have lost 2 pounds since last Wednesday. You see, I crowed, It's okay to cheat on a piece of potato kugel or salami once in a while. It doesn't affect you if you're really good the rest of the time. 
The problem with these self-assurances is that it leads to a subtle shift in attitude. Suddenly, the wall that you mentally put up between the permitted foods and the forbidden foods grows more translucent. And it's very easy to fall off the wagon, lose progress, and go down the spiral of despair and giving up.
Yesterday was a bit of a difficult day, with having Sonny Boy home thanks to Memorial Day. I ate very few veggies, drank little water, and worst of all, ate supper really late - and ignored the fact that my chosen starch was sliced potatoes swimming in oil.
I went to bed with a feeling of dread and yuck. I wasnt feeling as good as I normally do at night. Sure enough this morning when I weighed myself, the 2 pound weight loss was gone. I'm back to last Wednesday's weight. Plus, I'm really bloated. I had been amazed the past few days that I fit back into clothes I havent worn in 2 years. Now my stomach is protruding again. I feel bizarre.
Eating chicken and potatoes at 10 pm isn't the best idea. Plus, I might be bloated for another reason, who knows. Having PCOS I can probably claim female-related midsection bloating for weeks at a time. I can never know.
Whatever the case is, I now have to decide if I should cancel tomorrow's appointment, or go down and face humiliation.
We'll see. I'll be a really good girl today bli neder. Salads. Water. Stay away from carbs and oils and slippery-slope near-cheats.
One thing I'm certain, that humble pie is always on the approved list of diet food....