Some
You are spot on! I have never seen a diet that works. What does work is a life style change. Paying attention to what you eat, portion sizes, and a balanced meal plan. I also find it important to eat within the first hour after I have worked out for that day!
I rarely eat red meat and make sure I have dark greens with most meals. I eat slowly, letting my mind catch up to my body, and I exercise portion control.
I do a combination of walking and running intervals at least 4 days a week with weight training and recently core on those same days.
There is no easy way out and it takes an effort to keep the pounds off as we age. The choice to maintain your body depends on how healthy you want to be and how healthy you want to feel!