Sarah, I was in therapy for 9 years and terminated because I had to move and change jobs. BUT, 9 years after that, I felt I needed therapy again and relocated my therapist and went to see her for another 9 years, 1996-2005. This time, everything got resolved well and we spent 14+ months just working on the termination process.
It is very hard work but not impossible and you can't tell what the future will hold. I'm 57 now and doing great; healthy, wealthy, and wise