I say "I don't know" a lot. Especially when she asks me about my thoughts. I'm good with identifying feelings and events, but not thoughts. My mind goes blank. Sometimes, I answer "I don't know" when I don't want to talk about something. But I'm an extremely honest person and wind up saying right afterwards "Well, I do know, but I don't want to say it". Then, of course, she'll coax it out of me.