The purpose of life

Is it true that every life has a purpose ? If yes, what is his life's purpose... I don't get it... Not sure what he wants. But his life seems incomplete. There are things that he wants.

A good health, a trip to mountains, a marathon that he should run and many more things. He wants to laugh out loud and be merry but just can't do it. He has not been brought up to do so. Even when there are occasions he cannot laugh. Why is it so hard for him.

He wants to study more but do not know what the purpose is. What he is earning at present is good enough for his family and it takes care of all his physical needs. So I know for sure that it is not for money. His life is currently well balanced and he gives enough time to his family and work. But he is still dissatisfied. why ?

I do not know why does he wants to study ? Is it for knowledge ? What would he do with that additional knowledge? Will it make him more happy than what he is now? and how ? Who will get me these answers ?