Existentialism. A study of what it means to be human.
CrashCourse vlogger John Green introduces existentialism in a lively, engaging manner I find particularly accessible, a brief overview that manages to remain faithful to the tradition's history of complex ideas and technical concepts.
As increased consciousness and psychoeducation can augment the core therapeutic process, I welcome you to acquaint with some of the foundations of the existential philosophy out of which this useful approach arose.