How does your personality shape your life and what, if anything, can you do about it?
Are you hardwired for happiness, or born to brood? Do you think you re in charge of your future, or do you surf the waves of unknowable fate? Would you be happier, or just less socially adept, if you were less concerned about what other people thought of you? And what about your Type A spouse: is he or she destined to have a heart attack, or just drive you to drink?
In the past few decades, new scientific research has transformed old ideas about the nature of human personality....