Quote by Dale Carnegie: “Happiness doesn't depend on any external conditions, it is governed by our mental attitude.”

This means that your inner state of mind, not your external circumstances, truly determines your happiness. By choosing a positive mental outlook, you can control your emotional well-being regardless of what happens around you, fostering resilience.

Published just after World War II, this book addressed the widespread anxiety and stress of a post-war world. It offered practical strategies for individuals to manage worry and find peace amidst rapid societal changes and uncertainty.

Dale Carnegie (1888–1955) was an American writer and lecturer, and the developer of courses in self-improvement, salesmanship, corporate training, public speaking, and interpersonal skills. Born in poverty, he authored "How to Win Friends and Influence People," a timeless bestseller that continues to guide individuals in communication and leadership.