Are you naturally outgoing, anxious, disciplined, or the kind of person who hears “let’s go out” and immediately starts inventing excuses? Science has an explanation. Your personality may be partly wr... Are you naturally outgoing, anxious, disciplined, or the kind of person who hears "let's go out" and immediately starts inventing excuses? Science has an explanation. Your personality may be partly written into your DNA, but your genes aren't running... [3565 chars]