Joseph Campbell's monomyth, or the hero's journey, is a basic pattern that its proponents argue is found in many narratives from around the world. This widely distributed pattern was described by Campbell in The Hero with a Thousand Faces (1949). An enthusiast of novelist James Joyce, Campbell borrowed the term monomyth from Joyce's Finnegans Wake.

Campbell held that numerous myths from disparate times and regions share fundamental structures and stages, which he summarized in The Hero with a Thousand Faces:

Campbell and other scholars, such as Erich Neumann, describe narratives of Gautama Buddha, Moses, and Christ in terms of the monomyth and Campbell argues that classic myths from many cultures follow this basic pattern.

In a monomyth, the hero begins in the ordinary world, and receives a call to enter an unknown world of strange powers and events. The hero who accepts the call to enter this strange world must face tasks and trials, either alone or with assistance. In the most intense versions of the narrative, the hero must survive a severe challenge, often with help. If the hero survives, he may achieve a great gift or "boon." The hero must then decide whether to return to the ordinary world with this boon. If the hero does decide to return, he or she often faces challenges on the return journey. If the hero returns successfully, the boon or gift may be used to improve the world. The stories of Osiris, Prometheus, Moses, Gautama Buddha, for example, follow this structure closely.

Joseph John Campbell (March 26, 1904 – October 30, 1987) was an American mythologist, writer and lecturer, best known for his work in comparative mythology and comparative religion. His work is vast, covering many aspects of the human experience. His philosophy is often summarized by his phrase: "Follow your bliss."

Joseph Campbell was born and raised in White Plains, New York in an upper middle class Irish Catholic family. As a child Campbell became fascinated with Native American culture after his father took him to see the American Museum of Natural History in New York where he saw on display featured collections of Native American artifacts. He soon became versed in numerous aspects of Native American society, primarily in Native American mythology. This led to Campbell's lifelong passion for myth and to his study and mapping of the cohesive threads in mythology that appeared to exist among even disparate human cultures.

In 1921 he graduated from the Canterbury School in New Milford, Connecticut.