"Patrick Carnes (2001) argues that when children are growing up, they develop "core beliefs" through the way their family functions and treats them. A child brought up in a family that takes proper care of them has good chances of growing up well, having faith in other people, and having self worth. On the other hand, a child who grows up in a family that neglects them will develop unhealthy and negative core beliefs. They grow up to believe that people in the world do not care about them. Later in life, the person has trouble keeping stable relationships and feels isolated."