Self-obsession is a term used to describe an excessive preoccupation with oneself. It is closely related to the term egomania, which is defined as an obsession with one's own ego or self-importance. Egomania is typically characterized by grandiose behavior, an inflated sense of self-worth, and a disregard for the feelings of others. Self-obsession can lead to a variety of negative outcomes, including depression, anxiety, and social isolation.