Some people listen to themselves rather than what others say. These people don't come along very often. But when they do, they remind us that once you set out on a path, even if the world tells you you're crazy, that it's okay to have full conviction on an idea, to go all in on building something great, and to put all your cards on the table. They remind us to think bigger, to be more crazy, to take bigger risks. They remind us to always bet on yourself.