I had a client once. He said, "But I only eat a donut once a week!" "I only eat pizza on Friday night!" "I only have a few cookies with the kids after school!" "We go out for fast food just a couple times a month!" Even after I showed him that his "once-in-a-while" eating equated to a diet high in unhealthy fat and refined products, he still couldn't see it. For him, once in a while for everything was okay.