The aim of this article is to give an overview of the different concepts related to the phenomenon of regularity so as to better outline it in the context of a medical treatment. The attitudes, the beliefs, the perception of the personal control as well as the motivation are presented as the different factors influencing the adoption and upholding of a health behaviour. The recent conception of the learning process and the active role given to the learner have led to the recognition of the fact that, in order to have an effective learning process, the learner must become involved in the self management and self control of his own learning process. Whatever the chosen strategy, an educative intervention focused on the knowledge can only be efficient if it enables the person to increase his (her) control.