Adler's individual psychology, along with Sigmund Freud's depth psychology and C.G. Jung's analytical psychology, forms the foundation of modern psychology. The knowledge and insights that Adler acquired as a practical physician in Vienna constituted an important part of the foundations of his psychology, in which he sought to understand the law of human psychological development. According to Adler, this law of psychological development is the most important guide for anyone who wishes to avoid succumbing to dark impulses and is instead striving to consciously shape their destiny. Through these investigations, we pursue the study of human nature, a science that is rarely cultivated elsewhere but appears to us as the most important and essential endeavor for all layers of the population. His insight that neuroses arise from conflicts between the natural.