Does my life really have purpose?

Vanity of vanities, says the Preacher,

vanity of vanities! All is vanity.

3 What does man gain by all the toil

at which he toils under the sun?

4 A generation goes, and a generation comes,

but the earth remains forever.

5 The sun rises, and the sun goes down,

and hastens to the place where it rises.

I the Preacher have been king over Israel in Jerusalem. 13 And I applied my heart to seek and to search out by wisdom all that is done under heaven. It is an unhappy business that God has given to the children of man to be busy with. 14 I have seen everything that is done under the sun, and behold, all is vanity and a striving after wind.