So I came to regret that I had worked so hard.
Therefore I went about to cause my heart to despair of all the labour which I took under the sun.
So I turned around and gave my heart up to despair over all the labor of my efforts under the sun.
Therefore I turned about to cause my heart to despair concerning all the labor wherein I had labored under the sun.
I then gave myself up to despair, as I thought about all my laborious hard work under the sun,
Therefore, I ceased, and my heart renounced further laboring under the sun.