Children and adolescents who are able to regulate their behavior, emotions, attention, and motivation in a goal-directed manner are mentally strong children and adolescents. This ability to self-regulate is based on the so-called executive functions of the frontal lobe. They not only significantly influence the learning success of growing individuals but also their social-emotional development. These important functional skills are supported by positive health behaviors. Sports and exercise, a natural and balanced diet, sufficient sleep at night, and genuine rest periods during the day are central foundations for making self-regulation easier.