The yogas of dream and sleep are used in the Bon and Buddhist traditions of Tibet to attain liberation. 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.