Accepting that you are terrified instead of fighting it might help it collapse some. When things get "crazy" for me, I just shrug and relax about it and that will help for a few moments at least, sometimes enough so I can "start over" at a lower level. Maybe bring a talisman in to therapy with you; something you know and enjoy (book, stuffed animal, special piece of jewelry, I brought my grandmother's afghan in once) and use it to keep yourself connected to your world that you feel more comfortable in.