A few days after registration opened at Yale for Psyc 157, Psychology and the Good Life, roughly 300 people had signed up. Within [six] more days, about 1,200 students, or nearly one-fourth of Yale undergraduates, were enrolled. The course, taught by Laurie Santos ... tries to teach students how to lead a happier, more satisfying life in twice-weekly lectures. Students want to change, to be happier themselves, and to change the culture here on campus, Dr. Santos said in an interview. If we see good habits, things like students showing more gratitude, procrastinating less, increasing social connections, were actually seeding change in the schools culture. A 2013 report by the Yale College Council found that more than half of undergraduates sought mental health care from the university during their time there. A lot of us are anxious, stressed, unhappy, numb, said Alannah Maynez, 19, a freshman taking the course. The fact that a class like this has such large interest speaks to how tired students are of numbing their emotions - both positive and negative - so they can focus on their work. Psychology and the Good Life ... stands as the most popular course in Yales 316-year history. Dr. Santos has encouraged all students to enroll in the course on a pass-fail basis, tying into her argument that the things Yale undergraduates often connect with life satisfaction - a high grade, a prestigious internship, a good-paying job - do not increase happiness at all.