The Short Path to Enlightenment. By Paul Brunton. Full Audiobook. 

These accessible teachings distill the essence of Advaita Vedanta, Zen, Sufism, Dzogchen. Brunton calls them Short Path teachings. A simple recognition, a brief moment of grace, can make what seemed like a far-off spiritual goal actual here and now. But we need reliable pointers for how and where to look. This compilation of gems distills the essence and effective practices of this path in direct, jargon-free language useful to followers of any or no particular tradition.
The true gift of this wonderful book, says Adyashanti, is in how nuanced and subtle Paul Brunton understood these profound and transformational teachings and how directly he conveys them. Read this book as you would a scripture or a sutra and let it open your eyes to eternity.
Includes:
How to move from the Long Path of spiritual disciplines to the Short Path of direct insight
Short Path exercises
Experiences that may occur
Warnings
Stages of realization
The nature of lasting enlightenment.