Zen (2009)

In the early 1200s, Dogen brought Chinese Zen philosophy to Japan, and established the Japanese Zen school of Buddhism. He taught that a person was capable of realizing Buddhahood within himself, by way of Zazen. Zazen is extended hours of sitting and meditating to achieve a state of “Mu” (nothingness, or empty existence).

Unfortunately the movie Zen is not yet available on HBO Max.