How much you eat has little to do with how hungry you are! It's nutrients that your body is asking for. Make sure you've got a good balance of protein, complex carbs, veggies and healthy fats at meal times so that you feel properly satisfied.
We have a confession to make. We NEVER count how many calories we eat and we don't believe you need to in order to lose weight and be healthy. When your diet is full of whole, nutrition-packed foods, you don't have to worry. Quality over quantity!