Audit Yale's most popular course from home, free

Get ready to learn a lot about smiling. Yale University's massively popular "happiness" course, technically called "The Science of Well Being," is now available to audit online for FREE. The course offers insights from Psychology and neuroscience about what drives happiness, and then challengers viewers to experiment with behavior change exercises to help rewire the brain.

It was a campus sensation and became available online about two years ago. Here's a quick lesson from creator Laurie Santos. Happiness does not come from complex desires. "We miswant things. We think we need to change our life circumstances to become happier," she says, but "what plays a much bigger role are our simple practices, simple acts like making social connections, or taking time for gratitude, or taking time to be present in the moment."