How would you define a body-image disorder? "Im fat yet everybody tells me I look great???"
In my experience, people who have been fat before tend to "suffer" from this. We change faster on the outside than on the inside... our brains take some timeto get used to the new you. I know also the fear of being fat again is all too real, but guess what? is you with your actions the only factor that control that.
As for "never being where you want to be", well, who is ever? however, beware, there is a thin line between a perfectionist and somebody who is obsessed... Be the first, don't be the second. If 100 people tell you you look great, they can't all be wrong, right?