Edited to add intro, finally:
Most folks here already know me, so I'll keep it short. I'm 44, and I've been overweight since basically puberty. My first real, full-on diet was Weight Watchers at 18. I made it almost to goal, but not quite, and immediately gained everything back plus about 30 pounds.
Next diet: Atkins, when I was about 26. Made it to goal, maintained for three years. Then I listened to all the people saying how unhealthy it was and how low-fat was the way to go. I ate bagels with nonfat cream cheese and pasta with nonfat sauce all the way back to where I started. Plus 30 pounds or so.
Next came a series of low-fat diets, none of which worked. Followed by a blur of Weight Watchers and some others. The lowest I got was on WW, to about 140 (15 above goal). Then my mom died, and I went on the Supersize Me diet. Somewhere in there I also tried fen-phen and a few other more extreme things.
Back to Atkins. Lost maybe 15 pounds, then things stopped and nothing budged. Gained it back trying low-fat diets again (including the Subway diet, which was totally fun for a couple of weeks). Back to Atkins, only now it didn't work at all, and I couldn't lose more than a couple of pounds on it. Added lots of exercise - nothing. Switched to Weight Watchers - gained 5 pounds in a month.
This is when I pretty much gave up. I went back to low-carb and didn't lose weight even though I was averaging under 1000 calories a day (thank you, ketosis), but at least I felt better without the sugar. I saw a series of doctors to try to figure out what the problem was. Three recommended Medifast, but I thought it was too extreme and not a long-term solution.
Then one day, I'm not sure what happened. I looked it up on the Net out of desperation, and thought maybe it COULD be a long-term solution if I just committed to basically sticking with it for the rest of my life. I liked that it was at least reduced carb, so I'd been in a mild form of ketosis, even if it wasn't as low as I was used to. So I ordered a month's worth of food and told myself I'd give it a month and see what happened. Honestly, I didn't think I'd last a week without getting bored silly and giving up.
First few days: pretty hungry, but no other problems because I was so used to being in ketosis. The main issue for me was the sweetness of most of the products, and the saltiness of the soups. I wasn't used to having much of either. But I started losing weight right away (5 or 6 pounds the first week, 2 a week after that for the rest of the month). I stuck mostly with the soups and chili because of the sweetness issue, but oddly enough, I really didn't get as bored as I had expected.
After that first month, I had a lot of traveling to do because I was interviewing for jobs around the country. I stuck to the plan as best I could, but had a few questionable meals - no WAY was I going to tell a prospective employer I couldn't eat at a certain restaurant because I was dieting. The thing is, though, I kept losing. Slowly, but losing.
So here I am. It's a year later (well, it will be in a few days). I accepted a job and moved halfway across the country, from Southern California to Texas. And then I just moved again, because I bought a house here. I still lose slowly, but I LOSE, which is still something of a miracle to me. I've gone from a size 18W or 20W to a size 8 (or a 6 in some brands), one size from my goal (I think; I'm still toying with the idea of going down another size after that, but I'll have to think about it because I know my body image is out of whack). According to mybodycomp, I'm no longer overweight; I still have about a pound to go on the other BMI calculators, but I think mybodycomp is probably more accurate because it requires a lot of measurements rather than just height and weight.
Side benefits? I haven't been sick in an entire year, other than something that was either shingles or (as I think) just some sort of pinched nerve. And I've made some new friends here (some of whom I get to meet in person at the end of the month - yay!!). And I've learned that I'm stronger and more patient than I thought I was.
End of book.