Self-confidence is needed in every part of life, be it from standing in public or making any announcement in public. Carnegie harbored a strong love and passion for public speaking from a very early age and was very proactive in debate in high school. He went to the Warrensburg State Teachers College and later onwards became a salesman for Armors and Company in Nebraska. He also moved to New York in the pursuit of a career in acting and gave classes in public speaking at the Young Men's Christian Association. It became an instant success and subsequently became one of the biggest bestsellers of all time. It sold more than 10 million copies in many different languages.