awww, yeah I can understand this. You sound prepared, which is good
Also remember why you have chosen to do this work, as im sure there is a good reason for you choosing to do so.
I never thought I would settle so well into incalls stuff but I was crazy nervous too but its amazing what you get used to (as long as your being safe and sensible of course)
With some not all, I just think 'its only an hour etc, just get through it and then get the 'thrill' of counting the well earned money after they have gone.
Also one of the most common phases in any job to get you through it 'think of the money'
Wish you luck and stay safe x