I enjoyed this course from Yale university on the science of well-being, it is Yale universities best voted free course. here is a link to enrole coursera.org/learn/the-scie...
Dr Laurie Santos is an engaging teacher, its laid back, enjoyable things we all do without thinking and best of all it can improve your well-being. No pressue to complete pick it up for as long or short you want, just a nice thing to learn.