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Teachers usually consider their work as an opportunity to transmit knowledge. A recent study conducted with secondary school teachers, before and after teaching experience, shows an evolution characterized by the necessity of maintaining fulfilling teacher-student relationships, in which feelings of mutual trust are key. In addition, pedagogical methods are undergoing a tremendous change, in which digital technologies are playing a major role. This research investigates the possibility of assessing teacher satisfaction today in view of the professional development of teachers, who face unpredicted socio-educational issues when they enter the profession. Therefore, the way in which professional identity is submitted to a subjectivation process depends on the meaning granted to teaching activity, based upon its usefulness. In that way, teaching could be related to a feeling of happiness.