Reality therapy is a straightforward treatment approach that is appropriate for criminal justice professionals who do not have advanced psychotherapy training. The major objective of reality therapy is to enable clients to achieve conscious mastery of their behavior by making them realize there are no excuses for irresponsible acts. The article focuses on theoretical principles of reality therapy and outlines five treatment techniques: involvement, current behavior, evaluating behavior, contracting between therapist and client, and commitment. The successful use of reality therapy in probation counseling is discussed. Case vignettes are included. 11 references, 1 figure. (Author abstract modified)