Be Kind …… Always
It’s the only non-debatable behavior to have as a means toward a better end, a positive end.
True, there are others that will serve us very well too:
Be hard working
But none of them will pave the path to happiness and righteousness without kindness. Yet kindness CAN pave that path all by itself.
Kindness, compassion, and empathy (which I lump together under just “Kindness”) are all we need to give our lives meaning and make the world a better place.