The highest courage is impossible without self-conquest. And self-conquest is never easy. A man may be a marvel of physical courage, and be a coward in matters of self-government. Failure here threatens dire disaster to his entire career.

John Thomson Faris's 1920 work "The Book of Courage" is a vintage self-help book that focuses on courage and its importance in attaining happiness and success.

Self-help books aim to help the reader with problems, offering them clear and effective guidance on how obstacles can be passed and solutions found, especially with regard to common issues and day-to-day life.