Interview with Daniel Marcelli, child and adolescent psychiatrist and head of the Child and Adolescent Psychiatry Department at the Henri-Laborit University Hospital in Poitiers. Should we set limits for adolescents? How can we support them in managing a chronic condition? How can we encourage them to take the best possible care of their health? Daniel Marcelli is a child and adolescent psychiatrist who works with adolescents seeking treatment in the Child and Adolescent Psychiatry Department at the Poitiers University Hospital. Through his practice, he sets standards for professionals who care for adolescents. This reveals a delicate balance between listening and authority—not authoritarianism—in both care and education, as well as in support.