Joan Didion is an American writer best known for her novels, essays, and memoirs. She was born in 1934 in California and is considered one of the most influential writers of the 20th century. Didion is a recipient of the National Book Award and the National Humanities Medal. Her works explore themes of morality, identity, and family. She is also known for her pioneering work in New Journalism, which combines literary techniques with journalistic reporting.