Individualism

noun self-centeredness

• His constant bragging and self-centered behavior can be attributed to his egotism.
• She's always talking about herself, it's like she's the queen of egotism.
• That guy is so full of himself, total egotism on display.
• Egotism is like a wall that prevents you from truly connecting with others.

noun extreme selfishness, with a grandiose view of one's own talents and a craving for admiration

• Narcissism is a personality disorder characterized by an excessive need for admiration and a lack of empathy.
• Her constant selfies and obsession with her appearance are signs of her narcissism.
• Don't be such a narcissist, nobody wants to hear you talk about yourself all the time.
• The politician's narcissism blinded him to the needs of the people he was supposed to serve.