It is important that any therapy system be based on a sound theoretical framework. Basically, the theory provides the therapist a lens from which to approach the therapeutic change process, and a blueprint from which to practice in a scientific way. Without a well thought through and sound theory, a therapy system can easily become too eclectic, lose focus on the change mechanisms that have been proven to work, and risk being ineffective. Theories help counselors understand the dynamics of human behavior and choose therapeutic approaches appropriate to specific clients and situations. Therefore, there is a widespread belief that a good working knowledge of and adherence to the theory that underlie therapy will lead to better clinical outcomes.