Strength of will - is essential to your survival and success. The competitor who won't go away, who won't stay down, has one of the most formidable competitive advantages of all. In evaluating people, I prize ego. It often translates into a fierce desire to do their best and an inner confidence that stands them in good stead when things really get rough. Psychologists suggest that there is a strong link between ego and competitiveness. All the great performers I've ever coached had ego to spare. - Bill Walsh