Ryan Holiday: How Your Ego Can Block Authenticity by Laura Coe published on 2017-01-24T10:01:13Z At his core, Ryan Holiday is a writer and a media strategist. He dropped out of college to apprentice with Robert Greene (who authored The 48 Laws of Power). He then ran marketing for American Apparel and has since gone on to author five books, one of which is Ego is the Enemy, his latest.