" It is not knowledge of actual inferiority in skill or knowledge that gives us an inferiority complex and interferes with our living. It is the feeling of inferiority that does this. And this feeling of inferiority comes about for just one reason: We judge ourselves, and measure ourselves, not against our own “norm” or “par” but against some other individual’s “norm.” When we do this, we always, without exception, come out second best. But because we think and believe and assume that we should measure up to some other person’s “norm,” we feel miserable, and second-rate, and conclude that there is something wrong with us. "

― Maxwell Maltz , Psycho-Cybernetics, A New Way to Get More Living Out of Life