Happiness comes from doing good things. But true happiness comes from doing good things for others. Everyone must not act only for own benefits but has to also create benefits for others. If other people are happy, we will be happy too. Happiness of others is the happiness of the public. We must think of public interest before self-interest. His Majesty King Bhumibol Adulyadaj the Great once said,
“…Thank you for helping me work. Working with me, I have nothing to offer except the joint happiness in doing good things for others…”