We believe we are better than average workers because we humans overestimate our abilities relative to other people. We overestimate our many things, including our work performance. And we likely surround ourselves with co-workers who pose no threat to our self-concept. If you want to improve at work, listen to those that can provide you critical feedback.
Have you ever thought about whether you are a great employee? What did you decide? What is your true value to the company? What do the managers think of you? Every employer has a list of great employees. It may not be written down, but it exists. Are you on this list? Here are a few traits of great employees.