Designing Your Life: How to Build a Well-Lived, Joyful Life

This should be read by every teenager confused about the “What shall I do with my life?” question. Even if you aren't, read it anyway - because what you think is right for you may not be right at all. Avoid making a costly mistake! For adults, it's never too late. It's a great guide for those wondering how to go about a change of career and lifestyle.

PS: Be sure to do the exercises. They are invaluable.