I had to leave my T the first time (after 9 years of therapy) kind of quickly and without much termination, etc. because I was moving too far away. I more or less shut down for the last session, we didn't really do "termination" things; I walked out into my life as you are planning.
The next 2-3 years were horrible as I was doing well and didn't feel bad but I didn't really feel anything at all, I couldn't get "into" my head like I was accustomed; I felt like "I" was going on without Me, never mind Myself
After 9 years of not seeing T, things in my life changed and I called her again and saw her again and everything was exactly the same. . . only different! It was wonderful and all the things I didn't do "right" in my first 9 years of therapy with her I was able to do right and I'm living happily ever after now.
The going back thing was one of the best things that has happened to me in my life so far. You can go back later sugahorse, and perhaps later you will have picked things up on the way. I remember too how much my T had changed; we'd get into these weird deja vu conversations from way back 10-12 years earlier, but then she would respond totally differently and things would be much better. She too had grown! Who would have thought that T's are people too and learning, growing, and changing from doing therapy with us?