Chapter 4 focuses on treatments that work for suicidal behavior and surveys various treatment approaches. Descriptions of evidenced-based therapies are presented and include cognitive therapies, dialectical behavioral therapy, problem-solving therapy, multisystemic therapy, and partial hospitalization with psychoanalytic focus, as well as interpersonal and mindfulness-based cognitive therapy, which have preliminary data. Dr. Joiner presents his own open trial data addressing all aspects of his model of suicide. As he describes it, his approach seems easy to teach, learn, and implement. The three main principles are assessing interpersonal problems, supporting motivation for treatment, and increasing self-control.