Karen Horney was a neo-Freudian psychoanalyst who disagreed with some of Freud's theories, particularly his views on women. She developed her own theories around neurosis, arguing it stemmed from disturbed childhood relationships rather than sexual drives. Horney outlined 10 neurotic needs that drive defensive behaviors in response to childhood anxiety. Unlike Freud, she believed people have the ability to change and work towards self-realization rather than being determined by instinctual drives.