I used to worry about intruding upon the therapist - not so much in terms of boundaries or communication, but in the sense that I worried some material was too toxic to bring up. As if it were infectious, somehow, and would intrude on his peace of mind.

He's been very good about not intruding on me. It doesn't take much for me to feel intruded upon, so I appreciate his discretion here. It's only happened 2 or 3 times in as many years.