Marianne Deborah Williamson is an American spiritual teacher, author, lecturer, and activist. She has published twelve books, including four New York Times number one bestsellers.
Oliver Napoleon Hill was an American self-help author. He is known best for his book Think and Grow Rich which is among the 10 best selling self-help books of all time. Hill’s works insisted that fervid expectations are essential to improving one’s life.
Grammy Award-winning singer/songwriter Taylor Swift made a splash in the country music world in 2006 and has gone on to become one of the top acts in popular music.