As a registered dietitian who specializes in nutrition or exercise and weight management, I congratulate you all on your successes. I just want to point out that YOU worked (not Weight Watchers, sparkpeople.com, or whatever program you used).
People lose weight when they have the energy to take care of themselves and to consume fewer calories. There is no single program that emerges as "the best" way to lose weight. But we do know that people who lose weight tend to eat breakfast, eat lower fat foods, eat on a schedule (don't skip meals), and exercise.
A registered dietitian (RD) can offer you personalized guidance that can help you develop a food plan that you are willing to maintain for the rest of your life. To find a local RD, go to www.eatright.org and click on "FInd a Nutrition Expert". N.