I can identify with what you are feeling. With my first T I too felt really stirred up and couldn't sleep, and found that thoughts of my therapy invaded my waking hours. It feels really different with my new therapist. I don't know whether or not you'd be better off changing therapist. For me I definitely was. Therapy wasn't manageable for me with the last one. My old therapist was also highly respected, she was suggested to me by another therapist, but I've come to wonder if other therapists can actually know if someone is a good T. I think only clients can know this. I think it is hard to find a T that can really help you. I think that my ex-T was too close, too in my face, expressed too many of her own opinions, with my new T it is all a lot slower paced and our relationship is developing gradually.