What you are experiencing, indicates you are on an important break through with your Therapist and in your Therapy. You are entering a new world of Healing. The anxiety and fear are the indicators of this. Healing as you are doing, causes these feelings, because healing can be very scary.

You feel like you are dieing, because your old ways of feeling and behaving has bit the dust. But don't worry, wonderful better feelings will replace then, along with a better positive self concept.