When you realize that these traits do define you rather well...

• Believing that you're better than others
• Fantasizing about power, success and attractiveness
• Exaggerating your achievements or talents
• Expecting constant praise and admiration
• Believing that you're special and acting accordingly
• Failing to recognize other people's emotions and feelings
• Expecting others to go along with your ideas and plans
• Taking advantage of others
• Expressing disdain for those you feel are inferior
• Being jealous of others
• Believing that others are jealous of you
• Trouble keeping healthy relationships
• Setting unrealistic goals
• Being easily hurt and rejected
• Having a fragile self-esteem
• Appearing as tough-minded or unemotional

and that fact depresses you.