- For better or worse, you must play your own instrument in the orchestra of life.
- Remember, today is the tomorrow you worried about yesterday.
- Our thoughts make us what we are.
- Today is life-the only life you are sure of.
- Our fatigue is often caused not by work, but by worry, frustration and resentment.
Dale Breckenridge Carnegie, author of How to Win Friends and Influence People, was an American writer and lecturer, and the developer of famous courses in self-improvement, salesmanship, corporate training, public speaking, and interpersonal skills.
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