Ask YC: Lessons of an entreprenuer

Tomorrow I am going to rewrite the speech I gave just over a year ago to a group of video game developers in Green Bay, WI for a group of college students in Milwaukee. I can't of a better group to ask for some new ideas. Heck, Maybe PG as a top idea? The original ppt can be found here: jdavid.net/archive/speeches/Lessons of an Entrepreneur.ppt I am wondering what other Examples, or Lessons would make for a good point in a playful discussion about entrepreneurship to college students. My guess is that only a few will actually have an interest in starting a company, but I want everyone there to get value out of the presentation. I feel like there are lessons to learn about being entrepreneurial and learning how to start something or create change. I guess I see entrepreneurs as custodians of change in this world. We either change things through really profitable businesses, or through the creation of groups, organizations or culture that fundamentally make this world a better place. So what Examples, Lessons would you share with a bunch of college students in IT that might be looking to change the world? (please use the following format) Example: {catchy title} {story} Lesson: {catchy title} {story}