The key to the 99 is the one. Or, put another way, the key to the group is the one individual. Think about the one, talk to the one, regard the one, serve the one. If you are sincere and constant, you will discover that gradually your influence with the many will be magnified.
Seek to understand before you seek to be understood.
Nothing tastes as good as thin feels.
You have two ears and one mouth. Use them accordingly.
It comes from within.
Management is formal authority given from above. Leadership is moral authority given from below and all around.