People are important. Period.
Therefore treat everyone you meet with dignity and respect irrespective of their social status or financial muscle.
It is almost foolhardy to mistreat people. It is certainly unwise to be rude to anyone.
In this new year, make it your resolution to speak kindly to people, and to treat everyone fairly and decently. This should include but not limited to your subordinates, spouse, maids, servants, friends, superiors, children and parents.
Remember the popular saying: people may forget anything but they never forget how you treat them or how you make them feel.
We all benefit when we do things right.