Jim Clark is a serial entrepreneur who became a billionaire in the 'Internet age'. He was involved in starting Netscape, Silicon Graphics and many other start-up ventures.

When asked "What Traits Should Every Good Entrepreneur Possess?", Jim answered, "Discontent and anxiety. Most entrepreneurs are not content with the way things are. But if they're smart, they're extremely anxious too. Most ideas are going to happen whether you do them or someone else does. It's the person who feels most anxious about it and builds the prototype who is likely to win. The best entrepreneurs tend to move quickly and efficiently. They don't waste a lot of time making decisions."

→ 10 Rules for Building a High-growth Business