Wow... that's something I've been thinking about more and more. I'm still booked into July and don't know that it will end there... but I'm on a good track right now, generally speaking, and I'm happier than I've been in a long time, so whereas months ago I felt like I would be in therapy for life, at this point, I can see a light at the end of the tunnel. From what you described though, your ability to handle it, to allow yourself to grieve it and say goodbye and be ok with feeling the sadness... the thought of that still makes me shudder and want to turn away from it... which suggests I still have some work to do Lol.
Congrats to you though, for getting to this point ! Must feel good!!