Living by the Golden Rule may be easier said than done, but it’s good to know that virtually every spiritual tradition spells it out one way or another:
All things whatsoever yo would that men should so to you, do ye even so to them: for this is the Law and the Prophets.
No one of you is a believer until he desires for his brother that which he desires for himself.
What is hateful to you, do not do to your fellow man. That is the entire Law; All the rest is commentary.
Talmud, Shabbet, 31a
This is the sum of duty: Do naught unto others which would cause you pain if done to you.
Mahabarata, 51 1517
Hurt not others in ways that you yourself would find hurtful
Surely it is the maxim of loving kindness: Do not unto others that you would not have them do unto you.
Regard your neighbour’s gain as your own gain, and your neighbour’s loss as your own loss.
T’ai Shang Kan Ying Pien
That nature alone is good which refrains from doing another whatsoever is not good for itself.