First published in 1926, “The Secret of the Ages”, was one of the earliest and most influential self-help books that popularized the power of positive thinking. Written by the American author, editor, and researcher Robert Collier, “The Secret of the Ages” encourages readers to use the newly emerging psychological tools of visualization, faith, and personal development, to make their greatest dreams and wishes come true. Collier’s work is encouraging, uplifting, and full of practical guidance for those who wish to improve the quality of their lives beginning with their mindset. Collier’s ideas were popular during his own lifetime within the “New Thought” movement and gained even more prominence after being referenced in the hugely successful movie and book “The Secret”. Rhonda Byme, author of “The Secret”, credits Collier with giving her the idea for her own method to self-improvement. Byme says of Collier’s book: “The glimpse came in a hundred-year-old book, given to me by my daughter Hayley.” Those looking to improve their life and state of mind will continue to find inspiration and useful advice in this timeless classic.