This infographic is adapted from a design by Satoru Hirose, which is in turn based on a blog post by Eric Barker at Barking Up The Wrong Tree.

Barker, E. (2016). This is the fun way to easily improve your life, backed by research. Barking Up The Wrong Tree. Retrieved from https://www.bakadesuyo.com/2016/07/improve-your-life/

Hirose, S. (2016, July 28). Sketchnote #18: Power of humor. SaturoHirose.com. Retrieved from https://sketchnote.satoruhirose.com/2016/07/power-of-humor/