Recently someone did a big study of the "Biggest Losers" and what happens to them afterwards. Almost all of them gain it back, and it's not just because they lost it too quickly, apparently. It seems the body simply fights to keep the weight on. Their metabolisms slowed down; they had to eat less than most people of their weight to keep the weight off.
Those people are probably at an extreme end because after all, they had more to lose than most of us. But for anyone who has lost significant weight, maintaining is a heck of a lot harder than losing. Most of us can make a "project" of losing for a time. It's a goal and we work towards it, and man, does it feel good to achieve it! But unless we commit to major lifestyle change, we go back to our former habits and then the pounds come back.
The thing is, there's a reason we have those habits, right? They support us in some way. Nobody can give up all her supports and little joys and feel okay.
I want to be healthy and fit but I also want to be happy. For me, happiness includes cake with friends, wine with dinner, delicious meals out once in a while and never ever thinking about calories or counting them. It also includes regular but not obsessive exercise. Lately that has fallen by the wayside because I've had so many different health and family issues going on. I am mostly at peace with the resulting weight gain. I was scheduled for an exercise class this morning and woke up still feeling gross from the dental surgery and I said, you know what, body? You're going to rest today. And my body said thank you!