I saw my T for 10 years, I would no doubt still be seeing her had she not passed a year and a half ago. I have been seeing EMDR T for 2 1/2 years. Who know when it will end. Both Ts agreed I will need long term therapy because of very complex PTSD which also goes hand in hand with my complex grief.
Since I work in the mental health field (in-patient psych unit, and now in an IOP program) I hear many philosophies on various topics. About back when I had been seeing T for about 4 years, one of the social workers that anybody who had been seeing a T more than a certain period of time was actually just paying for a friend. It sent me all over the place, I periodically talked to T even now some times I have to check in with EMDR T on the issue. They remind me that some people of deeper and more complex issues.