Jason, you brought up an interesting topic. I often discuss this with my friends, some of whom have a real problem with letting go of an audition. I think the people that survive and stay reasonably sane in this business are the ones that are able to move on and forget about it after each audition. It drives me crazy when my friends call me up after an audition and post-mortem it to death. "I don't understand, they were just like, Thank you, nice voice, and I'm like, what the hell? What are they looking for? I looked at the people they kept, and I was like, What?"....and on and on. Most unhealthy.
It's important to develop the skill of not only the 2 minute performance, but also handling the aftermath. I believe the thing to do is to take whatever lessons you gained from the audition (that song doesn't work, I need to do it in a different key, etc.) and move on to the next one. Dissecting it and overanalyzing and fretting is just detrimental to you as an artist and also from a business standpoint.