I believe my 14 y.o. is suffering from an extreme case right now. Without an arrow on the string, he can come to full draw and anchor without difficulty. Put an arrow on the string and the only way he can get within 3-4" of full draw is with his eyes closed, sometimes not even then. He's so worried about putting the arrow in the X, that his form goes all to hades, no matter how much I try to coach him. I just ordered him a bow 10#'s lighter to "start over" even though he's been shooting traditional to some degree for a couple years longer than I have.