Abstract Self‐help/bibliotherapy includes information, explanations, exercises, and treatments that are completed with little or no assistance from a therapist. Research shows that self‐help approaches are effective for treating emotional disorders, especially when combined with brief regular therapist contact. Self‐help approaches are commonly accepted by both therapists and patients, and have the potential of increasing the accessibility and cost‐effectiveness of psychology treatments. This entry describes empirically supported self‐help books, and discusses the research evidence concerning several popular self‐help books for anxiety disorders and depression. We discuss the costs and benefits of incorporating self‐help approaches into the treatment of psychological disorders.