There are numerous opinions and recommendations on how the psychology of safety can be used to produce beneficial changes in people and organizations. Most can be classified into one of two basic approaches: person-based and behavior-based. Person-based approaches attack individual attitudes or thinking processes directly. They teach clients new thinking strategies or give them insight into the origin of their abnormal or unhealthy thoughts, attitudes, or feelings. In contrast, behavior-based approaches attack a client's behaviors directly. They change relationships between behaviors and their consequences. The person-based therapy process can be very time-consuming requiring numerous one-on-one sessions between professional therapist and client. In contrast, behavior-based psychotherapy was designed to be administered by individuals with minimal professional training. Given the foundations of humanism and behaviorism, it is easy to build barriers between person-based and behavior-based perspectives.