Yale's most popular course

"In reality, a lot of us are anxious, stressed, unhappy, numb," says Alannah Maynez, 19, a freshman at Yale University, adding that "students are tired of numbing their emotions so they can focus on their work..." So Alanna enrolled in a course called "Psychology and the Good Life," and so did 1,181 other undergraduates -- making it the most popular course in Yale's 316 year history.

The twice-weekly lecture class has been moved to Woolsey Hall, a venue usually reserved for symphony concerts. Professor Laurie Santos says her course aims to not only make individual students happier, but also to change the culture of the entire university. She explains, "With one in four students at Yale taking it, if we see good habits, things like students showing more gratitude, procrastinating less, increasing social connections, we're actually seeding changes in the school's culture."