Neil Killion is a former psychologist/management consultant, who for around 20 years founded and ran his own outplacement company in Sydney, Australia. His clients included many blue chip companies and large Government authorities. His discovery of "Life Cycles Theory" happened by accident when he was doing an ad hoc validation study of Daniel Levinson's "Mid-Career" identity.

Since 2005 he has devoted himself to the research and development of this theory of 12 year symbolic cycles in life, based on biographical analysis. He has written 3 books - "Life Cycles" (2008), "The Life Cycles Revolution" (2013) and "Life Cycles - Relationships" (2017).

He has received a very positive critical response with a number of Finalist Awards and the Silver Medal in Philosophy/Religion for the Readers Favorite Awards. His Goodreads average is 4.3/5.0 with commments including, "Utterly fascinating. Highly recommended." (Mid-West Book Review) and " "The book puts together enough evidence to make Killion's thesis credible.......in a way that will keep readers hooked."

Neil is a lifelong tennis tragic, who plays 3 times a week at his local courts. He is also a fitness trainer and away from sport his interests include music (he has been an amateur songwriter who plays piano at his club) and texas holdem poker (he runs and plays a club game twice a week and has competed in numerous tourmaments) plus on-line chess and trivia.