Twenty-Four Hours A Day, written by Richmond Walker (1892–1965), is a book that offers daily thoughts, meditations and prayers to help recovering alcoholics live a clean and sober life.

In 1952, while looking for educational materials for alcoholics, Hazelden President Pat Butler came across a small volume titled Twenty-Four Hours A Day.

The author, Richmond Walker of Daytona Beach, Florida, was publishing, selling, and distributing the volume himself.

Walker agreed after the General Service Board of Alcoholics Anonymous showed no interest in the undertaking.

Today, Twenty-Four Hours a Day has sold over eight million copies in 30 countries and is a staple of many twelve-step groups.