A psychotherapist’s deliberate use of self-disclosure to facilitate psychotherapy involves disclosure, by appropriate means, of the therapist’s thoughts, feelings, and certain other personal data as they become relevant to the demands of the therapeutic process. Rational use of this technique demands that the therapist have distinct therapeutic goals and be aware of patients’ psychological assets and liabilities, interpersonal needs and skills. It also requires an approach to psychotherapy that recognizes unconscious needs, wishes, and feelings in therapist and patient alike. (12 pp.)