When people are unable to apply and invest in themselves, they call others who did the work arrogant. When they cannot measure up and have refused to level up, they call others arrogant, but I call it confident. Confident speaks louder and has more volume, while envy and jealousy stay inside themselves, projecting arrogance onto others.
Never mistake mental illness for confidence nor self-hate for arrogant. Some call me arrogant, and I call myself confident.