In 1936, Dale Carnegie wrote one of the world’s most popular self help books - How to Win Friends and Influence People.

The idea was suggested by a book editor who had attended one of Dale’s public speaking courses in New York.

The result was a mix of psychology, philosophy and good old-fashioned common sense. Dale offered advice like: Smile. Give praise. Be a good listener. And remember people’s names.

The book went on to become a best seller. Today, more than 30 million copies have been sold worldwide, and it has been translated into 36 languages. Even the title is part of popular culture.

Dale’s daughter Donna Dale Carnegie tells Jane Wilkinson about the secret of its success.

Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more.

Recent episodes explore everything from football in Brazil, the history of the ‘Indian Titanic’ and the invention of air fryers, to Public Enemy’s Fight The Power, subway art and the political crisis in Georgia. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: visionary architect Antoni Gaudi and the design of the Sagrada Familia; Michael Jordan and his bespoke Nike trainers; Princess Diana at the Taj Mahal; and Görel Hanser, manager of legendary Swedish pop band Abba on the influence they’ve had on the music industry. You can learn all about fascinating and surprising stories, such as the time an Iraqi journalist hurled his shoes at the President of the United States in protest of America’s occupation of Iraq; the creation of the Hollywood commercial that changed advertising forever; and the ascent of the first Aboriginal MP.

(Photo: How to Win Friends and Influence People in 1955. Credit: Frederic Hamilton/Hulton Archive/Getty Images)