I haven't read the 4 hour workweek book, but the two pieces of advice 1) Money is a means not an end 2) Doing less e-mail, are good bits. But I'm not sure why this is worthy of repeating. Doesn't everyone know this? Personally I'm way more interested in how people discovered their passions. I love reading biographies of people on Wikipedia that shows chronologically how they came to realize or produce something great. What was it that led them to their ideas? How did they become so productive? Did they meet someone, read something, or had some other type of epiphany? If you love your job and want to do more, then I doubt money and e-mail are the things that hold you back. If you love your job you will be in the office everyday because it is an essential part that brings you happiness.