1. Become proficient in developing alternative points of view.
2. Do not assume the other person will think or act like you do.
3. Think backward. Instead of thinking about what might happen, put yourself into the future and try to explain how a potential situation could have occurred.
4. Imagine that the belief you are holding is wrong, and then develop a scenario to explain how that could be true. This helps you see the limitations of your own beliefs.
5. Try out the other person's beliefs by acting out the role. This breaks you out seeing the the world through the habitual patterns of your own beliefs.
6. Play "devil's advocate" by taking the minority point of view. See how alternative assumptions make the world look different.
7. Brainstorm. A quantity of ideas leads to quality because the first ones that come to mind are those that reflect old beliefs. New ideas help you break free of emotional blocks and social norms.
8. Interact with people of different backgrounds and beliefs. (As published in Why We Believe What We Believe)