It was not meant as a guide to practical choice separate from all other principles of conduct. It has nothing to say about specific choices, nor does it vouch certain moral principles, ideals, or virtues.
The golden rule relates, rather, to a perspective thought vital to the exercise of even the most basic morality: that of trying to put oneself in the place of those affected by one's actions, so as to counter the instinctive tendency to moral shortsightedness. It instructs listeners to treat others with the respect and understanding they themselves would wish to come across, and not to cause misfortunes on others that they would detest to have caused upon themselves.
The golden rule put emphasis on the ethic of empathy: treat others as you would like them to treat you. Empathy relies on understanding that the other person senses pains as you do or will feel gladness as much as you do if they are properly dealt with. If another person is mourning, you feel his/her grief and offer consolation. If another is hurt, you go out of your way to extend help and you treat the injured person with support to prevent further suffering.
Empathy, however, is not equally present among human beings, nor is any person incessantly empathetic for others. Some are deficient in empathy and are selfish, irresponsible and do harm to others with out feeling any remorse. ...