When you were born, you were crying and everyone around you was smiling. Live your life so that when you die, you're the one who is smiling and everyone around you is crying.
A student once approached a sage who was well-versed in the spiritual doctrines and mystical arts. He asked the master to teach him all the sublime secrets of life - to explain all the magnificent mysteries of the cosmos that are hidden in all the holy books. And he asked if all this could be done in the time that a person can remain balanced on one leg.

The great sage carefully considered this request. He smiled warmly and
replied: "Love thy neighbor as thyself. All the rest is commentary. Now go and learn."

Today, treat people the way you want to be treated.