When you buy through our links, we may earn money from our affiliate partners. Learn more. Alyssa Powell/Business Insider Yale's most popular in-person course ever was turned into an equally successful online version called The Science of Well-Being, which teaches you how to be happy. It's one of the Insider Reviews Team's most-recommended online courses.While you could always audit the class at no charge, Coursera's Cyber Week deal gives you free full access to the course you can get grades and a certificate of completion to add to your LinkedIn profile or resume, both of which can motivate you to finish the class.Below is everything you need to know about the course, as well as similar positive psychology courses you can take for free on Coursera, now through December 4.Read Insider Reviews' Cyber Monday 2020 deals coverage for more savings.Sign up for Insider Reviews' weekly newsletter for more buying advice and great deals.