Had Pizza Hut last night, still lost weight!

I can't believe it! I had the self control to log having eaten 2 slices of cheese pizza on MFP last night and stuck to it! Who am I?! Normally, I'd have piled on toppings and ate half of it. But instead, my daughter and I went on an hour long walk when we got home. Then I stepped on the scale this morning to see the smallest number I've seen in a month or so, woo hoo!