individuality

noun
  1. The quality or character of a particular person or thing that distinguishes them from others of the same kind, especially when strongly marked. noun
    Her individuality was evident in her unique style of dressing.
    The artist's individuality shines through in every piece of his work.
  2. The state or quality of being an individual; a person separate from others and possessing his or her own needs or goals. noun
    In a large organization, it's important to maintain your individuality.
    He struggled to assert his individuality in a family of high achievers.