Lack of confidence leads us into the dark waters of envy. We see men are functioning without hang-ups—and like girls who envy the unfettered freedom of older brothers, we find it easier to focus on how "lucky" the men are and how "unlucky" we are. Sequestered in an unfair situation, we don't have to do anything about achieving the competence and self-esteem we so admire in others.
p. 128 - The Cinderella Complex: Women's Hidden Fear of Independence (1981)