The essence of professionalism is service to others. In psychiatry, our professionalism is expressed in our care of people living with mental illness and their families, in our work with colleagues and students from many fields, in our dedication to advancing science, and in our efforts within communities, health systems, and society at large. As with all disciplines in the house of medicine, upholding professionalism in psychiatry involves the creation and application of special expertise as well as ensuring the competence of our colleagues.