I haven't really thought ahead to what "done" is going to feel like yet, but I do have a couple areas that I feel like I've been able to identify (I went into therapy with just a feeling of "something's wrong, I'm stuck/depressed" so part of the work was just figuring out what to focus on)...

1) Managing emotions better (like coping skills)
2) Having more satisfying relationships
3) Better self esteem
4) Having a bigger pallette of emotions to choose from (like treehouse mentioned, I basically have... ok, and upset)
5) Working out how to feel life more fully, all the joys as well as all the pain.

(I work on this stuff outside of therapy too obviously and have a couple of life goals, and when they are fulfilled then I'll probably be done)