Use napkins to remove grease from your pizza. Pizza can be healthier than some fast foods, but you have to be sure that there's not more grease than there should be.
It is very helpful to try to hold a full, engaging conversation when you are eating. This will prevent you from overeating and also from eating so fast that you don't realize how much you have ingested. Take your time, just enjoying your conversation and let yourself have fun.
Don't forget your diet when you are eating out. If you are unsure of what a certain dish contains, don't be afraid to ask. If your server doesn't know, the chef will be able to answer any questions. Speak up as to how you would like your dish prepared. Ask for salad dressing on the side, otherwise your nutritious salad might end up containing more calories than your main dish. Always choose a dish that is baked, grilled or steamed, rather than something that is fried.