An exaggerated belief in one's own importance
"You're both right," he declared with enough self-importance that Jessi wanted to scream.
When a parent or sibling plays a board game with a child, shares a bike ride, plays baseball, or reads a story, the child learns self-importance.
I realized that building up my sense of self-importance was a major part of my motivation for doing all the practices I had been doing.
Narcissistic personalities tend to have an exaggerated sense of self-importance, and are absorbed by fantasies of unlimited success.