You Are (Probably) Wrong About You
If you want to be more successful — at anything — than you are right now, you need to know yourself and your skills. And when you fall short of your goals, you need to know why. This should be no problem; after all, who knows you better than you do?
And yet your own ratings of your personality traits — for instance, how open-minded, conscientious, or impulsive you are — correlate with the impressions of other people (who know you well) at around .40. In other words, how you see yourself and how other people see you are only very modestly correlated.