Wow,
noregrets! 50 lbs is an awesome achievement!
I'm like most people on here - watching calories and exercising. I use MyPlate to track my daily calorie consumption (It's on the LiveStrong.com website, and it's free!), which allows me to input my daily exercise and thus adjust how many calories I need to consume in a day. I also drink a HUGE quantity of water every day - at least one gallon, if not two. It means I'm constantly looking for the bathroom, but as a bio major for the first half of college I learned so much about how water powers the Krebs cycle (the fundamental reaction that causes fat-burning in the human body) that I'm happy to incorporate it in. As for exercise, I do odd jobs for people to earn $$$, most of which involve house cleaning, painting, or dog walking. I burn at least 1000 calories during a weekday. It's crazy trying to eat enough to keep up with it, but it's working well. I started losing in mid-May and I'm down 27 lbs thus far. I'm trying to average 8-10lbs a month.
I've tried other methods in the past, although South Beach was by far the most successful. Like
recycledartgirl, I really enjoyed making it through each stage - the program has mini-goals built into it that really help motivate. But for some reason being on an official 'diet' greatly increases the likelihood that I'll end up falling off the wagon. I think probably because of the 'lose weight quick' mentality that is portrayed in diet advertising, even though South Beach isn't like that. Anyway, the lifestyle change is what works for me!