[header] How to stop being judgmental and prejudiced [title] Learn why prejudice exists. [step] This can help you understand the roots of your thinking. Studies indicate people are born with an innate tendency to be drawn to those similar to them and judge those who are different. 
One study showed a 3-month old baby preferred people who ate the same cereal she did, and distanced herself from those who did not. [substeps] Say you are religious and have been married for 20 years.