Friedrich Nietzsche

A) The theory of flow
B) Personal construct theory
C) Hierarchy of needs
D) Self-actualization
E) Self-determination theory
F) Existentialistic superman
G) The experience of Umwelt, Mitwelt, and Eigenwelt
H) Thrown-ness
I) Optimistic toughness

Existentialistic Superman

A concept derived from existentialist thought, referring to an individual who lives with authenticity and personal responsibility, without adherence to societal norms, often seen in Nietzsche's works.

Umwelt, Mitwelt

Refers to distinct aspects of one's environment; Umwelt focuses on the biological surroundings or the world as experienced by an organism, while Mitwelt emphasizes the social world or the world of interpersonal relationships.

Eigenwelt

A term from existential psychology referring to the individual's own personal experience and subjective world, emphasizing the uniqueness of each person's perspective.