Fear is a healthy emotion in some regards. Displaying fear is something I've never grown accustomed too. "Never let'em see you sweat" was a motto I first heard in a commercial from my youth, and as a young man It became a whisper in my ear as challenges arose and disappeared. The fear emotion allows you to respect whatever/whomever the situation is pertaining too. The 'yipps'..butterflies even 'bubble guts' are all signs. The names may change but the emotion you're feeling is the same. Agonizing about why. You get upset for allowing more emotion to show than you wanted. Breathe.. My guy! You're human after all..