A heads-up on two new books for late bloomers:
The Late Bloomer's Revolution by Amy Cohen (Hyperion 2007). I am about a third of the way through this book and enthralled. The opening quote is by George Eliot: "It's never too late to be what you might have been."
Finding Work That Matters in the Second Half of Life by Marc Freedman (PublicAffairs 2007).