When you win, be kind.
When you are ignored, be kind.
When you are stuck, be kind.
When you are upset, be kind.
When disappointed, be kind.
When you are in doubt, be kind.
When you are scared, be kind.
Kindness is defined in the Oxford English dictionary as the quality of being friendly, generous, and considerate. Being kind is not a sign of weakness and I think kindness will always serve you well.