I find it hard to tell my clients that soon I will be gone forever; mostly because they would try to book one more appointment with me before I left. Not to mention, it seems weird to just bring it up.
"Okay, well make sure you drink lots of water tonight and by the way I'm leaving forever."
Right? It sounds weird! I pretty much only mention it when people try to book with me for November, or when they ask me what's new. Otherwise, I don't bring it up. After all, there's quite a few clients I'm happy to disappear on. It makes me laugh to think of all of those slimeballs calling in to make an appointment with me only to find out that not only do I no longer work there, I no longer work anywhere. (I won't lie, it always makes me gleeful to think of them being someone else's problem).
Yes, I prefer to slip away into the night, disappearing from all of their lives. I suppose it's slightly unprofessional but I don't care. The grand majority of them never bothered to tip, so why would I bother to give them any notice?