You wouldn't expect someone who is extremely shy to pursue a career in music. Well, that's exactly what YUI did. Despite her shyness, she dropped out of school, started playing on the streets to help overcome her shyness, and by the time she was 18, she had released her first album, and by the time she was 20, YUI had already starred in a movie (Midnight Sun). Her perseverance to overcome her shyness and her accomplishments that came as a result of her perseverance are what I admire most about her.