" in both academic and business settings, these same benefits persist throughout our adult lives. For instance, students who were told to think about the happiest day of their lives right before taking a standardized math test outperformed their peers.19 And people who expressed more positive emotions while negotiating business deals did so more efficiently and successfully than those who were more neutral or negative.20 "

― Shawn Achor , The Happiness Advantage: The Seven Principles of Positive Psychology That Fuel Success and Performance at Work