St Therese of Lisieux (1873-1897) was a French Catholic who became a Carmelite nun at an early age. She died in obscurity at the age of 24. However, after her death, her autobiography – Story of a Soul was published and became a best-seller around the world. Her books explained her spiritual path of love and selflessness, and she became one of only three females to be considered a doctor of the Catholic Church.