Nothing is harder than being an entrepreneur: self-sacrifice, countless hours, true diligence and undying commitment. I interviewed the following accomplished entrepreneurs, who excel at what they do and have been handpicked by the media as ones to watch. Here, they reflect on their past mistakes and share some of their insights with their B2B counterparts when it comes to e-commerce, IT, funding, delegation, sales and scaling too fast.

No challenge derails managers from the goal of sustainability more than understanding what it means for an organization to really be sustainable. Some people think sustainability is all about environmental issues. Others see it in terms of the bottom line. And then, of course, there are people who use the term synonymously with corporate social responsibility and shared value. Business sustainability is none of these things. Rather, it is about time.

Anything that there is a demand for on the Internet, will exist on the Internet. If the old news media is unprofitable and disappears, it will be replaced by something new and probably better. It is true that the Internet is changing the media, very rapidly but those who claim that it is "killing the media" or any part of it are generally those who haven't been able to adapt.