My sister once said to me that I don't have ADD, I just don't concentrate.

I think my self esteem started to go awry when I was eight, and my younger sister was just starting school. One teacher said, "I shuddered when I heard you had a sister starting this school, but she's nothing like you at all is she?" The same teacher even told my parents how much better my sister was than I am, and then they relayed it back to me, in the hope it would make me do better at school.