The Forgotten Giant of Psychology Alfred Adler is one of the most influential psychologists you have never heard of. Everyone knows Freud. Most people know Jung. But Adler, who was Freud’s contemporary and colleague before their bitter split, has been largely erased from popular consciousness despite the fact that his ideas are everywhere. When you hear about inferiority complexes, birth order, lifestyle patterns, the importance of social connection, or the idea that people are motivated by future goals rather than past trauma, you are encountering Adler’s work. His fingerprints are all over modern self-help, parenting advice, therapy, and organizational psychology....