The capacity to be an “I”
/Differentiation means the capacity of a family member to define his or her own life's goals and values apart from surrounding togetherness pressures, to say “I” when others are demanding “you” and “we.” It includes the capacity to maintain a (relatively) nonanxious presence in the midst of anxious systems, to take maximum responsibility for one's own destiny and emotional being. It can be measured somewhat by the breath of one's repertoire of responses when confronted with crisis. The concept should not be confused with autonomy or narcissism, however. Differentiation means the capacity to be an “I” while remaining connected.
Edwin Friedman, Generation to Generation