Adlerian therapy was founded by Alfred Adler and focuses on understanding human behavior and psychology from a holistic, social perspective. Some key principles of Adlerian therapy include that individuals desire belonging, are purposeful and in control of their own lives, form their own realities, and should contribute to society. The four stages of Adlerian therapy are engagement, assessment, insight, and reorientation. Adlerian therapy has been applied to areas like family, group, and individual counseling.