KJV - Therefore I went about to cause my heart to despair of all the labour which I took under the sun.

ASV - Therefore I turned about to cause my heart to despair concerning all the labor wherein I had labored under the sun.

BBE - So my mind was turned to grief for all the trouble I had taken and all my wisdom under the sun.

WEB - Therefore I began to cause my heart to despair concerning all the labor in which I had labored under the sun.

YLT - And I turned round to cause my heart to despair concerning all the labour that I laboured at under the sun.

Notes