This is a book for new leaders and people who care for the world. It is an invitation to go deeper and wider into critical reflections on leadership in its management biases and old paradigms. It is an innovative approach for sustainability in its development values and connections with nature. It is a bold proposition to embrace sustainability leadership with consciousness paradigm that aims to answer deeper ethical, spiritual and purposeful questions. The book offers personal, organizational and systemic overviews of key concepts in relation to sustainability practices, leadership assumptions and consciousness values. The proposed new paradigm called Conscious Sustainability Leadership (CSL) is presented as an evolution matured by the professional life experiences of the authors and the critical observations of the studies and practices of real world and organizational leadership, ecological and planetary interdependence, and through Buddhist and Christian spiritualities. The reader is taken on a critical journey of reflections through key themes described and developed for understanding, provoking and questioning our own assumptions. It is a book for a new generation of leaders who seek change for a better world and are not afraid to explore and develop new paradigms.