Everyone always talks about portion control, but stress-inducing images of food scales, measuring cups, and teeny-tiny plates often scare people away from trying it. There’s a simple way to gauge the proper amount of food on your plate in order to get a balanced meal. One serving of protein -- meats and fish -- should be about the size of a deck of playing cards. One serving of carbohydrates should be about the size of your fist. Vegetables, especially leafy greens, should take up the rest of your plate.