Every once in a while, comes a product which changes the world. People flock towards these 'things', swear by it in their day to day activities. But how do these products get made? How does a man become a phenomenon overnight, by merely adding an 'i' in front of the phone? What ensues when their products become massive hits and the dollars start flowing in?

These 15 tycoons, who made things that shook the world, will roll out some of the most important words of wisdom, of your life.

Your efforts are all you own, in this world. Give it your all.