...This is my game face!

There is a well known phenomenon in sports that happens when an athlete gets over anxious for the big game or match.  He tightens up, his cognitive capacities become absorbed by his anxieties so there is no room for that which he normally sees and responds to so quickly and well.  His normal skill set during such an episode is reduced to those things he is very most comfortable with - and generally, he blows it.  I think I did something similar in the work world today as I was observed by a superior of mine.  My anxieties about being a good and effective teacher surfaced to the point that I was impeded in achieving that goal.  The irony is that every other class period went quite well.  I need to "practice with my headgear on" I guess.  Teach while being observed more often or at least stimulate the anxiety somehow, so it goes away.  I wonder if a video camera would do the same thing for me?