I have seen all the things that are done under the sun; all of them are meaningless, a chasing after the wind. ~ Ecclesiastes 1:14 (NIV)
Based on the fruit from his life, King Solomon in Ecclesiastes concluded that everything was meaningless, worthless. There are two temporary things that are worth investment of our time and energy. One is the lives of those we love. The other is the lives into which we can sow seeds of faith that may one day produce a harvest for Christ.
Both these things result in something that will endure forever. 1 Corinthians 13:13 says it well. "And now these three remain: faith, hope and love. But the greatest of these is love." So, contrary to what King Solomon concluded in Ecclesiastes, all is not meaningless. Love is never meaningless. Had Solomon spent time building good solid relationships instead of gratifying his desires, maybe he would have come to a different conclusion. Instead of happiness, he could have chased holiness. That would have been more satisfying and he would have been full. Yes, full from God's love, provision, mercy, grace and protection.
We would do well to do the opposite of Solomon. He was wise but also foolish. Let us pursue holiness. Let us strive to honor God by cultivating faith, hope and love. In pursuing these things, we will become more of what God wants us to be - holy.