4 hour work week + a link to a GOLD mine of book titles...
I read the four hour workweek by Tim Ferriss.
That made me question everything! Why do I do the things I do?
Started to listen to the podcast too: The Tim Ferriss Show
Got me to a lot of other books! He interviews people who are highly succesfull at what they do. He ask them their book recommendations. I recommend the list of Derek Sivers; he has a list of all the books he read and what he got out of it. A gold mine!