Motivation is bunk.
It waxes & wanes with the moon. It's uncontrollable, and unreliable.
If you want to lose weight, it's going to take more than just wanting to. Because sometimes I want a cookie, doesn't mean I'm going to eat it.
It's going to take true commitment. Doing things that you don't want to, in order to keep going. If that means that you have to track calories each day, because that's what's going to help you lose weight. Then you just have to do it.
I know, that's not what we want to hear. And it's not always terribly helpful, but that's the way it is.
If, however, you don't want to lose anymore weight, and you'd rather focus entirely on fitness goals then that's something different. In fact, being fit, building muscle and working out can help you to 'sculpt' (for lack of a better word) a body that you may appreciate more. Even then, it's going to take commitment to keep going