First time I freaked..... so had to stop right away.

2nd time medication... and a friend from work went and held my feet... yes my feet.... it grounded me and made me feel safe... he talked to me the whole time and cracked some jokes and I got thru it....

other things.... counting... 1,2,3,4,5,6.... concentrating on the counting helps when there is alot of pain in a procedure.. this isn't pain but that may help..
make the numbers BIG in your mind and just concentrate on seeing them and tune everything else out....