Seth Godin has walked this walk. He's started successful companies, taught millions of people and left his mark on our creative culture. He is the author of 19 international bestsellers translated into more than 35 languages, including "Tribes," "Purple Cow," "Linchpin," "The Dip," and "This Is Marketing." He writes daily at Seths.blog, which is one of the most popular blogs in the world. He's also the founder of the altMBA and The Akimbo Workshops, online seminars that have transformed the work of thousands of people. He writes about the post-industrial revolution, the way ideas spread, marketing, quitting, leadership and most of all, changing everything.