I'm currently taking a break from therapy, but one thing that my current T does EXCEEDINGLY well is to chime in at times about her own issues when they match the ones I'm struggling with, and she does this in such a natural way that I feel that I know her well, though I don't.

She shifts the discussion back to me quickly enough so that I don't think she's using MY time, yet allows me to know that she has "been there" and "gets it."

Well, on most topics, anyway.

Just pointing out that it's possible for T to disclose without harmful consequences.

It helps that I'm not a very nosy person-- I rarely ask a bunch of follow up questions.