There are so many methods, so many ideas out there.
"Well, this is what I'm supposed to do, but I'm not sure..."
Actors are basically taking a dart, looking at the board, and going,
"Oh, I hope I can hit the bull's eye. I hope. I think... I don't know."
When you go into an audition with any fear or doubt whatsoever, you're dead. You will not get the job because doubt will lead to insecurities which will then lead to mistakes and not auditions. Of course, mistakes are inevitable, but many are avoidable. Making too many avoidable mistakes causes you to lose confidence in the work that you're doing.