That a lot of things I thought were acceptable growing up were in fact abusive.

That it's remarkable that I've managed to be as happy and functional as I am in spite of all of it, but that dealing with all of it on my own has also taken a much larger toll than I realized.

That change is possible.

That things don't have to feel as awful and difficult as they used to.

Overall I've learned a tremendous amount about why I react to things the way that I do, what patterns exist in my life and relationships and where they come from, and what it's like to have someone actually be helpful in dealing with all of this, instead of being "helpful" and making it worse.