This kind of reminds me of a song lyric (in terms of outsiders' perspectives on therapy):

"And when I talk about therapy, I know what people think
That it only makes you selfish and in love with your shrink
But oh how I loved everybody else
When I finally got to talk so much about myself............"
-Dar Williams, What do you hear in these sounds

Anyway, I don't think "resonate" is such a therapy-y word..I find myself sometimes saying something about "processing" which I think is even more therapy-speakish, LOL. I mean, if you were constantly talking about your therapy or your T to other people (like, "Well, my T says...") I could see that being annoying. But simply using the term "resonate"? Nah. I don't think so.