I'd rather speak than jump off the high board. And yet I've had to speak in front of parents at the season-opening parents meeting, and I've had to jump off the high board to show my kids you won't die when you hit the water.
...
Damn kids make parents do all kinds of things they don't want to do.
Like get up early.
Anyway, back on-topic, yes, if you can get into your zone just before a stressful event then the anxiety that you feel is much less likely to distract you. No different than the sharpshooter that simply lifts his gun up to his cheek and fires, one shot at a time, even though he knows there's a tank down below that will eventually figure out where he is. Yep, I saw Saving Private Ryan on the weekend.