Authors:

When you lose your sense of humor, get a job running an elevator, because your life will be a series of Ups and Downs anyway.

Napoleon Hill (2008). “The Law of Success: The Master Wealth-Builder's Complete and Original Lesson Plan forAchieving Your Dreams”, p.62, Penguin
When you lose your sense of humor, get a job running an elevator, because your life will be a series of Ups and Downs anyway.