*Keep a healthy snack in the fridge (baby carrots or alike), well at this point for you, even snacking on sandwiches might be better.
*try to have 5 small meals instead of having 3 massive ones.
*Eat everything with Chopsticks (it will slow you down a bit and after a while youŽll get bored of eating so your portions will be smaller)
*If your BMI is over 28 you can get your doctor to prescribe
Alli that you keep you away from Pizzas and all things unhealthy plus cut some of your fat intake to help you lose weight.
*Keep up your gym routine.
Those are things that might work as little tricks to keep you away from eating a whole Pizza... For me what works is going cold turkey (no fat, no sugars, small portions, low calories and I prepare all my meals) but I understand it could be a too much if you already a lot.
Best of luck to you
If you like cooking, feel free to hit me up for some healthy but tasty recipes.