Just because there is food on your plate does not mean that you should keep eating. As soon as you feel your body is full you need to get up from the table. If you are in a restaurant then you should ask to have your food wrapped so you can take it home.
Despite the fact that fried potatoes have no nutritional value whatsoever, many restaurants still insist on offering them as standard fare with each meal. Nutritionists estimate that by opting for fresh or steamed veggies instead of potatoes, you can add nutrients and cut as many as 200 to 300 extra calories.
Paying attention to portion sizes is necessary if you're trying to count categories. Most people have trouble estimating portions and don't really know what a serving is supposed to look like. When you're cooking at home, use measuring cups or a food scale to check how much you're preparing. Since most restaurants serve very large portions, split a meal with a friend or bring home leftovers when you go out to eat.
Even though you are already eating well, do not forget that it is still important for you to get the proper exercise. That will make you burn off more calories, which would contribute to you losing much more weight in a much shorter time period than you expected.