Cab Fare

I believe the standard tip for a cab driver is 20% but how much should you tip your driver if he reads your palm, your face, and gives you a cranial massage?
"You look like a teacher", Hassan said.
"Can you keep your eyes on the road, your making me nervous", I said.
"What's your sign?", says Hassan.
"Taurus", I said.
"You love music."
"Yes I do."
"You love yellow."
"I like yellow. I love daffodils. They remind me of tea cups. If I were going to drink tea from a flower, I would choose the daffodil. Yellow's not my favorite though."
"Green is your favorite color."
"This is true."
He took a closer look at my palm.
"Why are you so sad?"
"I'm not...do you have a tissue?"
"You seem to have lost something important in the last year, maybe a few months ago."
"Most recently, my mind because I'm letting you read my palm at 2:00 am."
After subtly examining my left ring finger he took a guess that my love life was in the toilet. He told me that I'm old fashioned and that I like men to respect me. If expecting to be treated with respect makes me old fashioned than I guess I am. Why? Does today's modern woman demand disrespect?
Then he said, "You will be very relaxed when you go to bed tonight."
"Not right now Hassan, I have a headache."
Then he prescribed yoga.
"I was taking yoga."
"I know", he said.
Then he told me when I have a decision to make to call him.
I'm going to call him tomorrow morning when I'm trying to decide what to wear and again when I'm trying to decide what to have for lunch.
I think I will make Hassan my spiritual advisor.