My begining weight tipped the 300 mark. When I joined the gym and aquired my trainer, I was weighed in at 298 to start.
I knew when the trainer started to explain to me how weight loss works (in a lifestyle approach) you will not fail to reach your goal. He is so right. I have been on all the ups and down diets and felt like I was startving! My Mom did Weight Watchers and she lost 90 pounds in just one year. She maintaned her weight for the next few years up til the day she past away.