Dealing with temptation/craving for a food

First, this is my first post here, so some stats, I am 5’6″ Male age 45, been working on losing weight for a bit now, started at 300 pounds (when I steped on the scale and saw that 300 it scared the heck out of me so I went on a diet), And now at 171 pounds. Goal is 125 (or a 32″ waist which ever comes first), so I have a long way to go still. I will adit I still don’t see it in the mirror, even though every one else says they see a diffence. Using only diet and going to the gym 3 times a week (2 boxing classes a week, and the 3rd day things like eliptical and the stationary bike)

Now onto my question: how do you all deal when you have a major craving for a food that would be outside your diet (for me it been pizza)? Been craving it like crazy for the last 3 weeks, I am refusing to give in to it (and will not do a cheat day for it, I try to limit the cheat days to only holodays or REAL special occations such as birthday or aniversery things like that) But I can not shake the craving. I will admit I looked at “light” pizzas but, even though have more cals in them then I allow myself in a meal, and the idea of only eating part of it, well that would not work, as if I ate only part of it, I would strongly want to finish the rest of it, so I will not do that.