The Lomans are all extremely self-deceptive, and in their respective delusions and blindness to reality, they fuel and feed off of one another. Willy convinces himself that he is successful, well liked, and that his sons are destined for greatness. Unable to cope with reality, he entirely abandons it through his vivid fantasies and ultimately through suicide. Linda and Happy similarly believe that the Lomans are about to make it big. Unlike the other members of his family, Biff grows to recognize that he and his family members consistently deceive themselves, and he fights to escape the cycle of lying.
Willy, Linda, and Happy use self-deception as a means to mentally escape the reality of their lives when they are unable do so physically, as Biff and Ben do by moving out of New York.