The True Meaning of Happiness

The majority of people do not know the true meaning of happiness. They think that the rich are always happy, but they do'nt know money cannot buy
happiness.

What is the true meaning of happiness? In my opinion, one who works hard to do his best and whose main aim is to help others will always be happy.

I am not sure I fully understand the true meaning of happiness, but I plan to always work hard and study hard to do . I think I will know the meaning of happiness some day.