This book is the first volume devoted to mindset theory and practice in language education, offering interdisciplinary investigations into the motivation, competencies, emotions and wellbeing of language learners and teachers. Presenting studies from a vast array of language learning environments, the chapters explore topics such as students' attitudes and motivation surrounding language learning, the effects of mindset on vocabulary acquisition, the mindsets of early career teachers and experienced language teachers, interventions on students' mindsets and interventions that strengthen language teachers' growth mindsets. The findings presented in this book will be of great interest to instructors and researchers alike and present essential developments for the field of applied linguistics and psychology of language learning and teaching. The book will be invaluable in improving the quality of the language learning experience for teachers and students in various academic environments.