I’d strongly recommend the course Social Psychology from Wesleyan University as well: https://www.coursera.org/learn/social-psychology
The Yale well being course delves primarily into psychology relating to our self experience - our biases in expectation, our lack of accuracy in predicting what will make us happy, how to overcome these flaws. In the course, some time is spent on our social relationships, as that something that is consistently found to be of major weight in regards to happiness.
Social Psychology extends these concepts further outside of self experience, and examines how they color the breadth of our experiences with other people. How quickly do we judge others, and do we even know we do that? How do we judge others differently than ourselves? Why do we behave differently in groups? What makes a good person conform to bad behaviors? What makes us act compassionately?
The social psychology course then ends in a way that ties it back to the well being course: what are the means of improving our social relationships, and what really makes us happy.
For further study related to these, the below courses are great (and free!):
The Moralities of Everyday Life from Yale - the psychology of morality. For example, we consider our moralities fixed, intellectual parts of ourselves - but why when given a questionnaire in a foul smelling room are we more likely to be against gay marriage and than if given the same questionnaire in a clean smelling room? Some reading on this particular aspect of disgust and morality can be found here: https://www.nytimes.com/2010/10/24/opinion/24pizarro.html
Foundations of Modern Social Theory from Yale - overview of major social thinkers. The above talk about the individual, and the direct relation, but what structures emerge from the individuals and how do those structures change the behavior of the individual? This course takes a broad scope, looking into the political theory Hobbes, Adam Smith’s Invisible Hands, Marx’s ideas of alienation and historical development, Neitzsche’s view of power, Freuds tying of sexuality and civilization, Weber’s ideas of class, and Durkheim’s theories on social solidarity and how suicide is often not a purely individual choice. Great for understanding the foundation of modern sociology.