Twenty years ago today, Steve Jobs delivered his famous Commencement address at Stanford. "Your time is limited, so don't waste it living someone else's life," Jobs told graduates. "Don't be trapped by dogma, which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary