answer:Just think about your weight loss goal and keep your eyes on the prize. Tell yourself that it will pay off for you if you resist. Drink some water or something that will help keep you full. For me, coffee or tea will help me feel full. It also helps if you don’t show up at parties feeling hungry. Eat something at home first, like salad or a vegetable like string beans. That way, you won’t be tempted by foods. As far as how do you politely refuse people without offending them, different people will give you different opinions on that one. Just say “no thank you” and that should be enough. What you can do if you don’t want to deal with pushy people is just take something on your plate and then throw it out. Some may disagree with that suggestion but it’s a way of being polite and not even discussing diet. Just smile and say thank you, push the food around on plate, and chuck when nobody’s looking.