I remember my mom buying a collection of biographies at a flee market in Korea when I was little. I cannot recall which book I had first picked out from the collection, but the one that stuck with me the most was the biography about Florence Nightingale.
After finishing the rather short biography about Florence Nightingale, I set my self a goal for the first time in my life. The picture of Nightingale at the war site helping the wounded soldiers moved me so much that I decided to be a nurse when I grew up.