Entrepreneur: a leader willing to take risks and exercise initiative to operate a successful business. By definition alone, these competitive and goal-driven hustlers are programmed to make the sacrifices necessary for the greater sake of their self-made enterprises. It’s through foolish intuition and perseverance that the greats of the tech industry set out to change the world with their endeavors, while achieving massive wealth in the process. Some started from the bottom and found themselves on The Forbes World’s Billionaires list. Others continue to roll the dice on their prominent ventures to build on their uber-esque fame. Whatever the case may be, we can all learn a lesson or two on how to break into the entrepreneurial lane from these triumphant public figures. Here’s the 10 Tech Entrepreneurs Who Risked It All and Made It.