Entrepreneurs are far less successful when they are trying to make money--they are much more successful when they have a mission to change the world. No matter what you do, Khosla says, you have to be foolish to do what an entrepreneur attempts. Whatever your value proposition is, it should have the goal of making the world a better place and you should feel passionately about your contribution. If you don't have this and you run into an obstacle, you get stuck. If you are passionate about your product and your message, you can power through problems more easily.