Not sure if this is helpful, but I found the format of therapy stressful. I felt pressure to make use of the one or two hours per week. I would stew over this all week, then show up and already be on edge. Plus some therapists play subtle intimidation games, not greeting you properly or staring you down or positioning their chair in such a way as to provoke inferiority feelings, all of which is unnerving. Not surprising the mind can go blank. Feeling embarrassed or nervous, who wouldn't when facing a person who sits there scrutinizing, assessing, mentally labeling? It's like an interrogation in some ways, under the bright lights.