Originally published in 1927 this book attempts to acquaint the general public with the fundamentals of Individual Psychology. At the same time it’s a demonstration of the practical application of these principles to the conduct of everyday relationships & the organization of personal life. Based upon a year’s lectures to audiences at the People’s Institute in Vienna, the book pointd out how the mistaken behavior of individuals affects social & communal harmony; to teach individuals to recognize their mistakes; & finally, to show them how they may effect a harmonious adjustment to communal life. Adler felt that mistakes in business or in science were costly & deplorable, but mistakes in the conduct of life are often dangerous to life itself. This book is dedicated by the author in his preface to the task of illuminating progress toward a better understanding of human nature.