Beginning with an overview of the early history of research into altered and mystical states of consciousness by explorers such as William James, Kotler explores the pioneering ‘middle years’ of flow and peak performance research by pioneers like Abraham Maslow and Csiksgentmihalyi looks into the birth of positive psychology, and early studies on meditation and near death experiences.

Diving into the psychedelic era, Kotler looks at the work of modern researchers exploring flow studies, technological breakthroughs, and how organisations are making use of this new information.

In this overlapping exploration of spiritual and mystical experiences, peak performance, flow and psychedelics, Kotler shares what the science says about human possibilities - and what must remain a mystery, outside the purview of any research.