Just to let you know that you aren't the only one, I know exactly what you mean. Not to that level, but there have definitely been times where I've felt like "Wait, am I really serving that horribly? Does she actually think I am that incompetent?" For me that doubt is actually part of the release; outside of sessions I'm lucky enough to get a lot of the opposite, so to be able to just "feel small" is incredibly painful, but so is a hard smack to the feet.
All that said, it is still disorienting in a different way from physical pain sometimes! I won't pretend that the smile after a session or a comment on the message boards like "It was fun using you!" doesn't do a lot to make me feel like "Oh. Okay, right. That was part of the session."
(Also, sometimes I really am serving that horribly!)
