Describe all the positive qualities you have.
Oh hey, where's your exercise? Why not try this exercise again, and tell us some of the good things about you. Are you kind and compassionate? Do you like to help others? Are you trustworthy? Can your friends trust you with their secrets? Do you smile a lot? Can you make others laugh and cheer them up when they feel sad? Are you friendly? Are you determined?
If writing about yourself makes you feel uncomfortable for whatever reason, why not try this exercise: What good qualities do you like to see in other people? :-)