'Accomplished' in the Bible

I decided to carefully and thoroughly examine all that has been accomplished on earth. I concluded: God has given people a burdensome task that keeps them occupied.

I reflected on everything that is accomplished by man on earth, and I concluded: Everything he has accomplished is futile -- like chasing the wind!

{I accomplished great things}. I built for myself houses; I planted for myself vineyards.

Thus, {I accomplished far more} than anyone who [was] before me in Jerusalem--indeed, my wisdom stood by me.

When I considered all that I had accomplished and what I had labored to achieve, I found everything to be futile and a pursuit of the wind. There was nothing to be gained under the sun.

Next I turned to examine wisdom, insanity, and foolishness, because what can a person do who succeeds the king except what has already been accomplished?

So I came to be in despair about everything I had accomplished on earth.