A lot of people (practically everyone who has heard of the Enneagram), has heard of the wrong, corrupted version that has turned a method to develop our consciousness and self-awareness and connection to God into something about personality types, where people 'find their number' and something that is truly useless and not worth anyone's time.
The true enneagram that was taught by P.D. Ouspensky in his books The Fourth Way and In Search of the Miraculous is very different, has tremendous value, and is constructed based on the 'law of sevens' which is the cyclical mathematical marvel of 7ths and it's decimal .142857142857....and it's repeating cyclical pattern as mapped out on a circle.
But mostly, it is about a way to examine the mind and become in harmony with the universe through the practice that they called The Work. It is a practice of mindfulness that is a blend of Sufi Muraqaba Meditation,  Jewish Merkaba mysticism, Buddism, Hinduism and his own spin on things . It was especially created for the western mind and lifestyle. The idea being that one didn't have to become an ascetic, monk or fakir in order to become enlightened or reach the highest heaven - in fact - that was probably a hinderance as it tended to disconnect from reality. It is about a Fourth Way, a kind of 'mind hacking' that enables us to fast-track our development of awareness and consciousness.  For more information and additional resources, please visit ihaveatheorypodcast.com 
Podcast artwork is by Jo Blakely.