Everybody is different. And it depends on what you mean by being happy.

Some people just can't lose weight no matter what, so they accept themselves as they are. Does that mean they are happy? Who knows. All I know for sure is that *I* am not happy when I am the fattest woman in the room and have to shop in the XX department, or wear shapeless golf clothes that I had to buy in the men's department (that *really* sucks). I still need to lose a lot of weight, I'm far from lean, but I'm in the "not awful" range, and for that reason I am happy.

But I wasn't not-happy before.