Eric
Sounds like you are approaching it with the positive mind which will make it easier for you and it will be more successful too. I found it was easier to close my eyes and when doing easier to focus on the most pleasant memories I could think of which reduced my fears and made it go quicker. So you may want to try that to help you focus.

SCC R-Tonsil T2 NO MO Dec 2003. Completed IMRT Radiation only to tonsils(72Gy) and neck(55Gy)March 04. Detected at age 50.