I have been a business journalist for 23 years, including working in London and New York as associate city editor of The Daily Telegraph. Freelance for nine years, I specialize in interviews with chief executives and other major business figures. I am the author of "The Secrets of CEOs" and "Billions to Bust - and Back." What fascinates me is how the heads of the world's biggest businesses lead their companies and deal with the personal and business pressures of being at the top.