Not to sound like a commercial, but I lost 50+ lbs using Medifast (now it's Optavia) a couple years ago. I still use it when I'm getting fat, like now. Just had a blueberry muffin. Easiest diet I've ever done. The food isn't gross. I basically eat "junk food" and one super low carb actual meal a day. The foods I pick are all like brownies, muffins, bars, hot chocolate, and cappuccino.