Doctor Hudson's Secret Journal is a hard book to define. It is fictional but written as a journal. It contains a philosophy for living and touches on some religious thought and has been considered by many as a self-help aid.
Author Lloyd C. Douglas had a fine career as a minister before retiring to write his first novel at age 50. His first book, Magnificent Obsession, was on the best seller list for 18 months. It hinted at a secret lifestyle of doing good deeds without telling anyone. This was also supposed to bring personal power to the giver. People wanted to know more, and this novel was written to expand on the topic and to provide more of an overview of the fictional Dr. Hudson's life.
Douglas went on to write a number of very successful novels having to do with Christian themes, including The Robe, and The Big Fisherman. Several of these books were adapted for the big screen.
I very much enjoyed this mild taste of life back in a simpler time. The novel covers the period from World War I through the 1914 Influenza pandemic and prohibition. If you can find them, all of the novels listed are well worth reading!