the.com/grandiosity
The unshakable belief that you're the main character in everyone's story.
means An inflated sense of one's own importance, power, talent, or destiny, often detached from reality.
from From Latin grandis, great, by way of grand — but with the suffix that quietly turns greatness into delusion.
Clinical flagCore symptom of mania and narcissistic personality disorder.
Not confidenceReal confidence survives reality; grandiosity flees it.
Etymological cousinShares roots with grandeur and the grandiose gesture.