Consequently, arrogant individuals can be dismissive or even condescending when it comes to the opinions or experiences of others.
When this excessive pride reaches extreme levels, arrogance can be quite destructive for the person suffering from it and those who interact with them.
In addition to disrupting social dynamics, arrogance prevents open dialogue that could lead to progress and may impede self-development due to an ingrained resistance towards criticism or feedback from peers.
Thus, despite an outward display of superiority, arrogance serves only as a barrier that locks out personal growth or understanding within relationships. In essence, it breeds ignorance while bastardizing virtues such as loyalty and respect.
Confident people understand their potential and will never settle for less than what they can produce. As such, they are comfortable in recognizing when a task is “good enough” and consequently don't let perfectionism hold them back when completing the job.
They have a realistic perception of what perfect truly means, which leads to greater satisfaction with their work and a much more manageable workload.
More info: Types of Workplace Personality Tests