All good words of wisdom.
If you do do something wrong don't let it get to you. Put is past you and fly the rest of the flight as if nothing had happened.
I took my test and hadn't flown for 2 months. I was not on top of things as I should have been. Accidentally, I reset my timer in the middle of the hold. I just told the examiner that it was a mistake, told him how I would correct it, and did that. I did some other things that were not ideal, but I was within standards on all aspects and I passed, even though I thought it was my worst IR flight ever.