Try spending some time carefully defining "eat healthy." I know plenty of people that are skinny and don't really have any discipline about what they eat which flies in the face of "fat people are just lazy." Skinny people are lazy too! I think they have something different in their genes that lets them handle a modern diet better than I do. So I simply don't eat a modern diet -- voila, weight lost. The last 10 pounds came off without counting a single calorie and eating as much as I wanted. Not joking.