My favorite saying is "been there ... done that", because it's true. I've been obese and extremely ill. I tried every diet and medication that was thrown at me. The results made me feel like I was circling the drain.
12 years ago I started to change my lifestyle. I found an exercise program centered on Pilates and worked with a Health Coach. I made changes a little at a time and the results are life-long in my health and energy.