The personal shadow is a concept taken from Jungian psychotherapy. It is essentially the sum total of all negative aspects of the persona that have been disowned from the personal self. Traits that are what we normally perceive as being inferior, evil, or unacceptable. Acting on, or even acknowledging, these traits would cause cause a person to have a negative perception of themselves. These types of undesirable traits, while not openly acknowledged, are a common factor among humans. Likewise, the existence of these same traits are almost universally denied in the same of peaceful coexistence among people.