“…By leaning on positive psychology, it is possible to discover new tools to promote such educational change, a change that is currently needed for the well-being of students and teachers, and for human and environmental health. The goal could be sustainable happiness [37], "happiness that contributes to individual, community and/or global well-being without exploiting other people, the environment or future generations" [37], which should become a visible and explicit part of teaching and curricula at all levels of education [39][40][41][42]. Education for Sustainable Development (ESD) has already been infused into teacher education [43], and a more recent recommendation from the UNESCO Chair for Reorienting Teacher Education for ESD is to bring well-being into the mix [44].…”