Haven't actually done it, but wanted to once. This was with a T who regularly made me feel very angry. Looking back, she was defensive a lot of the time because I wanted more from her than she could cope with. She projected a lot of her stuff onto me as she wouldn't own it, and it made me feel hysterical at times. She wasn't listening to me so I said it was all pointless and I would go. I got to my feet and everything, but this shook T up and she asked me to sit down and discuss it. I stopped seeing her in the end though as I think I pressed on too many of her unresolved issues and we weren't a good match.