For me, that question had value in getting me to recognize what I was feeling. Because I was very distant from my emotions and used to stuffing them deep inside. So I had to learn to know what I was feeling. This took a long time. It was worth it, though. If my T asks me that question, and I don't know, I sit still and quiet and look within myself and try to feel my feelings. My T has told me a number of times that I am the one who knows, so I have believed him, and gained confidence that there really is stuff deep inside me that is knowable. I just had to learn how to listen and recognize what is going on. Giving myself time and space to do that is helpful. Not feeling that I must rush to answer T is helpful. Sitting in silence and letting feelings "come up" can be helpful. This requires opening my mind and not thinking in a frustrated way, "I don't know what I'm feeling, I have no idea, what am I supposed to say, I don't know, why does he ask me this, etc." It is OK to not know at first, and all that frantic "thinking" did not help me know what I was feeling. So it was better for me not to think about it, but just turn inwards and let the feelings come.