Vicki,
Sometimes session B is the best one to use first and only. If you have difficulty recalling times when you weren't anxious just let go and don't try to consciously recall them right in that moment. Just tell yourself I'm letting my non-conscious mind find those occasions for this listening session.
While listening to the two voices Just allow yourself to be as relaxed as you are and if the mind wanders that's okay. If you fall asleep. That's okay. If you are consciously aware of being asked to do something just do it as best as you can consciously and again trust that the non-conscious mind is doing it better.
AlexK