Too bad most such catch-the-carrot self help books don't address "I have no idea what I want" situations, let alone "I don't really want anything" or worse.
Not wanting anything does not necessarily imply a Zen-like state of being one with the universe staring at the sky in eternal bliss. It may mean feeling empty, directionless, amotivated, detached from everything, a modern Sisyphus rolling boulders in a meaningless, absurd universe. So be careful what you wish for.
Hehe. It's very true though. I think one of the primary reasons I feel happier now than when I was younger, is that I want much less. Or maybe my ambitions have become more realistic. Either way, I like it.