This book gives detailed instructions for dream yoga, including foundational practices done during the day. In the Tibetan tradition, the ability to dream lucidly is not an end in itself, rather it provides an additional context in which one can engage in advanced and effective practices to achieve liberation. Dream yoga is followed by sleep yoga, also known as the yoga of clear light. It is a more advanced practice where the goal is to stay conscious during deep sleep, when the gross mind and senses cease to operate and subtle mind is actualised. Most Westerners do not even consider this depth of awareness a possibility, yet it is well known in Tibetan Buddhist and Bon traditions.

"If we cannot carry our practice into sleep", the Bonpo lama Tenzin Wangyal writes, "if we lose ourselves every night, what chance do we have to be aware when death comes?".

"This explication of the dream and sleep practices becomes a window on the entire teachings of Tibetan tantra and dzogchen. I enjoyed this book immensely...powerfully and beautifully presented."Martin Lowenthal