And all that mine eyes asked I kept not back from them; I withheld not my heart from any joy, for my heart rejoiced because of all my labour, and this hath been my portion, from all my labour, and I have looked on all my works that my hands have done, and on the labour that I have laboured to do, and lo, the whole 'is' vanity and vexation of spirit, and there is no advantage under the sun!
Read all of Ecclesiastes 2 YLT