Raceka, almost anything can be made "safe" and general in nature. Take one of your T's comments and discuss that; since it's not coming "from" you initially, it probably won't get you that worked up.

My T made a comment about my style in therapy, how it was like I was driving along the highway fine toward the destination and then I'd get scared and suddenly take the next exit I thought about that and did the mind's-eye thing, imagining I was a car (what kind would you be? :-) and what I saw and reported was that I acted more as if it was a cloverleaf exit, not a true exit exit, because I always circle around and come back to hard subjects, just in a bit after I've gotten control of my surprise and panic at the suddenness and degree of fear/anxiety.

This conversation about my "style" in therapy was very helpful to me but not at all upsetting and kind of fun. I suspect because the observation came from outside of myself. So take any subject that you are curious about, say from reading a book or that someone else has said to you, or comment from your T and talk about that a little bit. It will probably tell you things that aren't too personal or will be easy enough to "control"/guide so you don't go anywhere you aren't emotionally prepared to go at the time.