'Efforts' in the Bible

Then I examined all of my accomplishments that I had brought about by my own efforts, including the work that I had labored so hard to complete and it was all pointless, like chasing after the wind, and there was nothing to be gained on earth.

Just as he came naked from his mother's womb, he will leave as naked as he came; he will receive no profit from his efforts he cannot carry away even a handful.