This research investigated the life and work of teachers who for over 30 years feel committed to the teaching profession and succeeded in it. It seeks to understand through testimonies collected through semi-structured interviews, what contributed to these teachers to come to an advanced stage in their careers, showing enthusiasm and satisfaction with their work, commitment and concern for the learning of their students. From Esteve´s work about the unease of the teachers, and other researches (UNESCO, Tenti Fanfani, CNTE, Lapo and Bueno, Marchesi, Day) about the teaching condition, the importance of inquiry on issues that provide the well-being of teachers was emphasized. With the help of privileged informants, ten teachers were selected who met the following criteria: have enthusiasm in their work, attentive to students learning, have 30 or more years of teaching experience, still regency of classes acting in junior high school or high school, preferably in public school. The analysis of the evidence spoke with several authors, among them Esteve, Huberman, Lüdke, Charlot, Tardif and Lessard, Tenti Fanfani, Contreras, Dubar. The analysis sought to elucidate how the choice of profession, the teacher education and the early years in their careers, the professional trajectory of the teachers, their conceptions about education and the role teacher´s in our society influence on their sense of professional achievement. We searched to identify variations and permanences in the identity strategies and work of these teachers, and circumstances that made their tasks become easy or difficult. The interviewed teachers are very much involved by their work, satisfied with the profession, but they don´t feel themselves as finished products. They experience the difficulties as challenges that drive them in the search of innovatory solutions. The exercise of different teaching functions contributed to enlarge their vision on the school and function. And each one chose, among the possible trajectories, those that best met their aspirations. At the same time in which they were individualized, they were not isolated, looking for partnerships for a joint work, either with peers within the institution, or with professionals outside the school, in universities, unions or teachers’associations. Their competence is fed of these partnerships and of the constant search of the knowledge, based both on a posture of being a learner as the search constant continual education. They built good relationship with students and look forward to mobilize them for the pleasure of learning.