Answer:
Alfred Adler developed a holistic approach to psychology, seeing mental health from a "biopsychosocial" perspective long before the term was invented. He was a contemporary of Freud and Jung, but rather than seeing the individual as "a collection of drives," he theorized that people were most mentally healthy when they exercised "social interest," (gemeinschaftsgefeuhl) which he equated with what he called "the law" of love of neighbor.