Self examination is the only way really. Why do you feel the way you do about X? What are your own biases? What are your own baked in assumptions? What details

Self examination is the only way really. Why do you feel the way you do about X? What are your own biases? What are your own baked in assumptions? What details do you not actually know, but are allowing yourself to assume? Think about things which you have a strong suspicion are true, but for which you do not actually have ironclad proof. For example, why did the person in front of you run a red light? Maybe they were late for work because they have poor planning. That might even be likely. But you don't know. Maybe their spouse had an accident and they are rushing to the hospital. Less likely, but still possible. Again you don't know. Why have an opinion about something which you cannot know?