The context of this verse is a person giving in to the sin of adultery and living a life of dissipation and excess. It could certainly be simply talking about how a life of sin will emaciate the body and destroy the joy of life. That could be all that is meant by “at the end" (latter end NASB) (319).
It could also mean the prospects for eternity. The words and feel are very similar to an event related by Jesus involving an unnamed rich man.
(Luke 16:23 KJV) And in hell he lift up his eyes, being in torments, and seeth Abraham afar off, and Lazarus in his bosom. And he cried and said, Father Abraham, have mercy on me, and send Lazarus, that he may dip the tip of his finger in water, and cool my tongue; for I am tormented in this flame.The end of this life or the beginning of the next? If you live in rebellion and sin they won’t be that much different.
So? Get your act together. God is patient but His patience is not eternal. If you are reading this there is still time for repentance and the healing of grace. If you have already become a part of God’s family and are walking in the light, pray for someone else who is still in the dark.