The last verse rings home the entire chapter – we need self-discipline. A wise life is full of self-discipline.
The chapter is mainly focused on the lure of sexual temptation – as real back in Solomon’s day as it is in ours. Sex is used for pleasure, for profit, and for personal gain – all different than the way God intended it to be. Rather than just preaching to his son, though, the wise teacher tells the child HOW sexual sin will ruin life – you will hurt relationships with your spouse, put you in hard relationships with others and often in their debt, and fill you with guilt. No matter how much our world tells us that sex outside of marriage is right, the truth just doesn’t line up. God made sex, and it is a good thing. But used outside of marriage, sex is harmful.
To live this wisdom in our day takes tremendous strength and courage and resolve. It is made easier, though, when you are surrounded by an incredible group of friends who can keep you focused on God and the most important things in life.