Quote of the Day by John D. Rockefeller: “I never placed my head upon the pillow at night without reminding myself that my success might only be temporary...” Great achievement often breeds dangerous complacency. Rockefeller knew that market victory is inherently fragile. Every evening, he forced himself to remember that enterprise fortunes can vanish without constant vigilance. This daily habit of deliberate humility anchored his business legacy. It redirected his energy from past wins to tomorrow's work. Real leadership requires continuous effort, self-discipline, and risk awareness. Staying grounded protects long-term prosperity far better than pride ever can.