Once Upon a Time…I was Perfect. Some people can't wait for high school to end. The constant comparison between students, the need to be the best, the idea that average is not even good enough to make it on a scale of excellence. It's no secret that [School Name] High School is one of the most challenging and rewarding educational facilities in [the state]. Students file out of a classroom after a test and complain of how bad they did, when really they might have gotten a B-. Outside in the real world, adults wish that trivial events like these were the least of their worries, but to a high schooler, what goes on between these brick walls [is] everything. When trying to get into college, students try to rack up the number of clubs and hours of community service to place on their college admissions applications. But the perfection doesn't lie in numbers, it is reflected in the effort put forth by every student in the school.These comments in a high school yearbook capture in a succinct and personal way the central elements of perfectionism as they have been described for decades by clinicians, researchers, and journalists. The student points to the relevance of striving to be "the best" and the downstream implications of effort and credentials established during high school. She alludes to the distortions that might befall perfectionists, the pernicious ways in which they might interpret their performance and how the intensity and distress engendered by those interpretations may notThe authors are grateful to Jana Mohammad Al-Nahhas, Angela Montfort, and Marieke van Nuenen for their assistance with this chapter.