July 29th, 2011
06:06 PM GMT
CNN has spent the past eight months trekking continents searching for the secrets of successful CEOs.
In episode 32 of our series "The Boss", we ask what keeps a business leader awake at night?
For one – our first billionaire CEO, who's based in Macau, the devil is in the details. And for our UK chief executive it's all about growing the brand.
About Business 360
CNN International's business anchors and correspondents get to grips with the issues affecting world business, and they want your questions and feedback.