Have a happy life

What is purpose in life?
Do you think of it before?
I think most of us have not a quite clear aim in life,I am in the same situation.
My psycological teacher told me that the objectiveof life is happy.A lot of people hunted by money,power,sexy,but are they really happy?Of course not.They donnot find the real meaning of life.I have a small hopoe.It is that I hope people I love will live a happy life,even though they arenot rich ,they arenot power.But they can enjoyed themcelfes .
Now cherish what you have got,value all things around you ,eventhough they arenot good,they hurt you before.