I am 45. I first went to therapy when I was about 16. I too survived both incest and sexual abuse outside my family of origin.
I too thought that I should have been done with therapy and work on this crap to feel good by now. What I have learned is that I no longer view my recovery from incest as an event. I also no longer speak of degrees of sexual abuse, only degrees of damage. It doesn't matter what went on when I was a child. The only things that matter to me now are what is happening to me today, and how do I change to feel better.
I wish you luck and am always glad to meet another survivor.