Philippe Matthews Show Guru Advice, Author Reviews, Tech Reviews, Entertainment News

If you take a look at the top 10 Twitter users you'll see a list of famous men and women, from Justin Bieber to Selena Gomez, who have used the popular platform to further expand their personal brands. Perhaps more interesting, however, is how everyday people are investing more time and energy into social networking for professional purposes. Just over a year ago, a local 16-year-old high school student emailed me out of the blue, proposing that he join me as a guest on a TV show I host.

When is the right time to walk away from a project or job? And what about all your fears of leaving? We continue our Leadership Hall of Fame series , a year-long look at the top business books and authors, with an excerpt from The 4-Hour Workweek (2007) by Tim Ferriss .