Ending therapy can be very hard, just like changing jobs or moving, and having to let go of friends or teachers/mentors or coworkers one enjoyed as friends. But if therapy is "successful" then it will be a good thing too, like getting a better job or moving on in school or life. I terminated therapy five years ago after 9 years and it has worked well; I'm doing great and though I miss my therapist as I would anyone else I really enjoyed/cared for, I understand about life/me not standing still and I've met and come to know and love other people, not taking my therapist's place, but alongside her and all the other friends and loved ones I've had in the last 60 years.