having had to do both, i find it is hard either way. The one time T and I mutually terminated, I got into a horrible panic about what would happen in the final session that I ended up in the ER. and that was that. When I thought I would have to leave with others I'd cry and cry.... and then eventually when the time came, it really wasn't so hard. I'd "grown out" of that T or... I needed a different speciality. Sudden departures of T's are really difficult. The new one I am with seems like she might retire at any moment... so I am not too willing to invest too much in to her. That way, when she gets around to announcing she's quitting (if I haven't left her by then because I think she's a headcase), i won't be shocked or upset.