Nathalie Sinelnikoff combines a pragmatic approach, critic and theorist of psychotherapy with an exhibition ticket ordered rigorous thematic classification. Their analysis allows to acquire knowledge and deep progressive various psychotherapeutic tools to better appreciate their challenges and objectives. Beyond the captivating approach to psychoanalysis, family therapy or institutional psychotherapy, this book constitutes an indispensable basis for any critical reflection and provides an overview to help understand this phenomenon highlights of contemporary society.