Saying goodbye to a therapist

Well its my last session with my therapist tomorrow :(   it's been a hard year and I've been very lucky to have been put with a very good one this time.
I always find goodbyes hard and find the end of therapy quite difficult. I'll admit I'm a very emotional kind of person and do get attached easily. The thing I find hardest is when you open up to someone and work through personal issues, and then all of a sudden you can't talk to them again. It's like losing a friend.
I know there are guidelines professionals have to follow for very good reasons but think I'll find it hard not to get a bit teary tomorrow.
Even though it's us in the sessions that do most of the work and they are just a listening ear with suggestions on how to look at things differently, but it's a bit scary to think it won't be there anymore. 
I can always go to the Dr if I dip again, but if I see someone new it's the going through everything again as they need your background history....
For now though I know I can do this x