Happiness is a feeling that we can't see it but we can feel it. See the picture and think it
You can see the picture the man who has got 3 no position he is happy but the other two person who have got 1&2 position they are not happy.
So we can say happiness means on how the condition of our mind is. You may have lots of money,cars,homes,property, lands etc. But it can't give you happiness. Because, money can't bring happiness.
To be a happiest person in this world, we should not greed for money. We should love every man from the bottom of heart. You know today you may have money but tomorrow you may lose it.But, the love and your wondrous works will not vanish from this world.
Be satisfied with what you have.Never greed for more.Otherwise, it will make you mad and depressed.I think you may know all about King Midas and the Cobbler.
To be a real human like Mother Teresa, you've to involve yourself in the humanity. Because, happiness lies in humanity and satisfaction.
Happiness is one of the most important things in human life