I feel your pain on that, I mean as much as I try to to fight I my whole body starts to shiver sometimes when I get nervous and stuff. My main problem though is that, I make a mistake I automatically assume the worse you know and I hate that, especially when I make a mistake,y mind branches out into the worst possible scenarios when so clearly have no evidence to prove it and so funny that I think about the same problem everyday sometimes. However whatever hurts us mentally physically or MENTALLY, only makes us stronger.