An easy way to make sure you're eating the right amount of food is to use the "plate method". Look at your plate. It should have:
½ fruits and veggies
¼ lean meat or protein
¼ grains or starches (like rice or pasta)
Be Careful! Plates have actually gotten bigger over the last 40 years. Most plates are 12 inches wide, but the plate method uses a 9 inch plate. This means you need to leave space around the outside of your plate to make sure you're not eating too much!