What is a mask?
If one reads up on Jungian psychology, one finds that having masks is normal for singletons. One does not behave the same at work as one does at home, nor with one’s spouse as with one’s kids. Doing so could be dangerous. Compartmentalizing one’s personality by one’s roles and environment is a positive survival trait, and if a person acts inappropriately in an environment or within a role, they might get in trouble. Singletons are automatically considered to have masks for their roles, subtle shifts in personality.