Bhagwan Shree Rajneesh 

The Discipline of Transcendence 

Discourses on the 42 Sutras of Buddha

Volume 2 

A manual for every seeker, this series of discourses features the step-by-step analysis of the twenty potential obstacles on the spiritual path as outlined by Gautam Buddha, and updated by Osho. Also featured is the intriguing story of Osho's own enlightenment in 1953, about which Realization.org says, "This may be the most vivid description ever written of what it feels like to become enlightened."