Tim ferris is a four time new york times best selling author and tech investor. He's also host of the wildly popular cast the tim ferris show, which has been down loaded over 200 million times since its inception. We all need mentors, and he brings many to choose from in his brand new book, tribe of mentors,. short life advice from the best in the world. It's all downhill after the inter no, no secret to happiness, low expectations.