Fortunately, according to the authors of this paper, simply telling yourself “I am excited” shifts your demeanor from what they call a threat mindset (stressed out and apprehensive) to an opportunity mindset (revved up and ready to go). “Compared to those who attempt to calm down,” the authors conclude, “individuals who reappraise their anxious arousal as excitement perform better.” Put differently: The sensations you feel prior to a big event are neutral—if you view them in a positive light, they are more likely to have a positive impact on your performance.