Your AA dissolves after a few warm ups because you hit the indifference threshold, meaning that you stop caring about how other people are judging you. If you let go of your ego and live in the moment, you can basically get the same result. The more in-state you are, the closer you will be to that indifference threshold. You can get in state by your sheer will if you have that much self-control. Fortunately, pickup makes you incredibly good at self-control.
Another thing you can do is do something physical to affect yourself mentally. If you happened to be walking around one night and a car passed you by as someone yelled out "THIS IS SPARTA!!!!!" out the window, that may have been me getting in state before a sarge.
