My 66 yo art teacher has shed about 50 lbs since I saw her last year. Weight watchers. I guess it all comes down to iron will motivation but I have never been able to follow a strict regime/diet of any kind and be successful at it. At some point, my eating motto became all things in moderation so over time that has worked for me. It is such an individual thing but if I mix carbs with protein and/or fat of some sort, I don't feel hungry again for a while. Thick cut oatmeal with blueberries and nuts every other morning. Olive oil scrambled eggs with some sort of greens mixed on other mornings. Or maybe peanut butter or avocado on sprouted bread toast.