Bias

I attended a training about good customer service last week and it is very helpful to me. It makes me realize certain things that I'm not aware. I'm guilty for being bias which means when I saw a customer whom I have a bad experience before, I tend to avoid this person. I assume that this person is already a bad person naturally so I would stay away from her any chance I got. But this doesn't work when we're working in a retail store. We need to overcome that bias feeling and we have to realize that people can change.