Yale University's "Psychology and the Good Life" (PSYC 157) may be the most talked-about course offered in the United States. Adam Sternbergh of New York Magazine took the course so you don't have to. In his article "How to be Happy: A Cheat Sheet" from the May 2018 issue, Sternbergh discloses:
Take a happiness inventory, learn how much money buys happiness, and try some positive psychology to see if your mood improves. A recommended reading list AND a music playlist is included.
Here's the music playlist put together by Yale's Happiness Professor Laurie Santos:
Cleveland Clinic https://health.clevelandclinic.org/get-happy-exercise-can-lift-mood-infographic/