Psychotherapy is a treatment approach for mental illnesses and disorders of behavior and mind. It involves talking therapies where a trained practitioner supports clients to modify their cognitions, emotions, and behaviors in desirable ways. Some key features of psychotherapy are that it provides a nonjudgmental and supportive environment for clients to discuss problems, explores more satisfactory ways of living, aims to facilitate effective and lasting changes, and involves interactions between the therapist and client that connect psychological theories to help improve client functioning.