Sigmund Freud was a great psychologist who believed that human personalities are shaped by our childhood experiences and that we are not really aware of these experiences or their impact on us.
He believed that the unconscious mind is more powerful than the conscious mind, and that the unconscious mind is a repository for all kinds of repressed feelings and ideas that can affect our behavior.
For example, if you have been abused as a child, you may unconsciously develop a fear of men. This fear may manifest itself in your behavior, such as by avoiding male doctors or friends or avoiding eye contact with men in general. You might not even be aware of why you behave this way until you start therapy and begin to talk about your feelings about men.
Freud also believed that dreams were messages from the unconscious mind and could often help us understand our behavior better if we looked at them carefully enough. For example, if someone has an anxiety dream about being late for work then perhaps they have been worrying too much about being late for work lately and this worry has caused their dreams to reflect this worry back at them through their dreams.
