Confirmation bias: The tendency to interpret new evidence as confirmation of one’s existing beliefs or theories.
In other words, once we believe something to be true, we ignore evidence that contradicts said belief and focus on the evidence that does.
This can work in your favor if people think you’re good at your job, or you’re smart, or any other positive attribute. But there are downsides. Once someone has doubts about you, it is incredibly difficult for you to overcome them.