Have a treat once a week or more. Many people who decide to start eating in a healthy way think they have to cut out all the food they really love, and that's not so. When you do have a fatty food or one high in sugar, just make sure that it is a smaller portion. Make sure that your food choices really are healthy and nutritious. It's easy to assume that you are eating a healthy diet when you aren't. Many foods are advertised as being healthy choices, but are actually no better than the unhealthy alternatives. Be sure to do your research to find out which foods really are good for you.