Positive illusions and positive collusions: How social life abets self-enhancing beliefs

Most people hold overly (though not excessively) positive self-views of themselves, their ability to shape environmental events, and their future. These positive illusions are generally (though not always) beneficial, promoting achievement, psychological adjustment, and physical well-being. Social processes conspire to produce these illusions, suggesting that affiliation patterns may have evolved to nurture and sustain them.