Anna Wulf is a fictional character from the novel "The Golden Notebook" written by Doris Lessing. She is a writer who struggles with her identity and the complexities of her life, reflecting the challenges faced by women in the 20th century. In the novel, Anna keeps four notebooks, each representing different aspects of her life, including her personal experiences, political beliefs, and creative endeavors. Through her character, Lessing explores themes of feminism, mental health, and the search for meaning in a fragmented world.