I was really encouraged by this. Every day, advertisements and media try to tell us different definitions of what will make us happy. This happens so much that we lose track of what we really care about, what we are really passionate about. Porras et al argue that when you find what you really care about, you will know because you will become obsessed about. And because you're obsessed about it, you lose track of time and you will work harder than anyone else to follow that passion. Perhaps you're in school, and you don't know what to do for your career. The key is find out what you really love and to make that into your career - not because it will make you rich or famous, but because following passions give you drive and committment that you won't find by following a career that you don't love or care about.
I hope that every student out there will realize the vast potential that they have when they find meaning in their life and can take actions to create more meaning. We are all capable of doing more when we do something that we are passionate about.