The most difficult lesson in life I have still to master has that of the same premise of the Golden Rule. It goes beyond treating others how they would like to be treated, and includes as well constantly recognizing them as though they were fascinating people, all of lives separate and unfathomable from my or your own point of view. Why can they not be understood? Because NO ONE lives or has lived exactly the same life. Not even my own brothers should assume they have had the same experiences, or know exactly what goes on inside my head, just because we grew up with the same parents, in the same house, etc.
We are all individuals who should be treated as such, and if anyone should assume anything about your character - judge you, mislead you, put you down - it is because he or she mistakenly thinks it is possible to understand every intricate ebb and flow of your boundless mind and experience.
Next time you are to meet someone as described above, recognize them as such a person, and if you do not have the time to detail to him or her that they have made this mistake, at least pity the person, and know that they do not yet know this lesson.