Florence Scovel Shinn carried out her work in the first half of the 20th century.

Through her teachings and numerous books, she was a profound influence on Louise Hay and other pioneers of personal transformation.

Wallace D. Wattles (1860-1911) was the author of numerous books, the best known of which is The Science of Getting Rich.

He experienced failure after failure in his early life until after many years of study and experimentation he formulated a set of principles that, with scientific precision, create financial and spiritual wealth.

He died a prosperous man in 1911.

James Allen was born in Leicester, England, in 1864. He took his first job at age 15 to support his family, after his father was murdered while looking for work in America. Allen was employed as a factory knitter and a private secretary until the early 1900s, when he became increasingly known for his motivational writing.

His 1903 work As a Man Thinketh earned him worldwide fame as a prophet of inspirational thinking and influenced a who's-who of self-help writers, including Napoleon Hill.