It's OK to be nothing sometimes if it keeps you from freaking out over something else.
My T said something along the same lines last time I saw her -- like, I've dealt with the really bad stuff and now I'm trying to figure out what to do to fill the spot in me it took up. I don't see her much (supposed to be every 2 weeks, but with my crazy work schedule, rarely works out that way) and have only been seeing her 6 months or so and I think that was her way of saying "why are you wasting your money," but I dunno.

And that *definitely* is just her, not saying yours thinks that at all. I am not a very good fit with this T but I don't have the time right now to look elsewhere.
I don't necessarily think you have to have "something to work on" all the time. Sometimes it is helpful just to have someone who will listen to you for an hour, no matter what you want to talk about, even if it's a football game or something.
There is definitely a "you" there. Might just need a rest. Nothing wrong with that.