Psychotherapy is an intentional interpersonal relationship used by trained psychotherapists to aid a client in problems of living. It aims to increase the individual's sense of well-being and reduce their subjective sense of pain Psychotherapists employ a range of techniques based on experiential relationship building, dialogue, communication and behavior change and that are designed to improve the mental health of a client or patient, or to improve group relationships (such as in a family). Psychotherapy may be performed by practitioners with a number of different qualifications, including psychologists, marriage and family therapists, licensed clinical social workers, counselors, psychiatric nurses, and psychiatrists.