I am a relative newbie to this forum, but I am a long time T2D, and an expert at having "bad food days".

The only way is to not beat yourself up, promise yourself that your fridge will be stacked with delicious "non-bad foods" and go forward.

Take note of what Janet said - "Doesn't mean you might as well eat off plan all day. Don't blow off the whole weekend if you had pizza Friday night."

I always keep on hand: full fat mozarella cheese sticks, hard boiled eggs, celery sticks, cream cheese and - my favorite treat - good quality Brie (because that stuff is expensive and I absolutely LOVE it I use it as a "good girl" treat) plus some home made peanut butter, eggs, grated cheddar (I buy the block and grate it myself, put it into 1 oz portions in baggies). I can make egg salad, cream cheese or peanut butter filled celery, nibble on cheese or make an omelette all in no time flat.

Or you can make an omelette and put your favorite pizza toppings on it if that is what you are craving...