Sayings 13-15: Fear the Lord and avoid slumber and drunkards.
v.15-16 (Saying 13) Follow wisdom. Children bring joy to parents when their heart follows wisdom and when they speak what is right and true. The child with a wise heart will make wise choices. See 10:1.
v.17-18 (Saying 14) Fear the Lord. Walk in the fear of the Lord and make pleasing him your priority. If you walk on that path there is hope in your (eternal) future. Don’t envy sinners (Ps 37:1) and your hope will not be cut off. The fear of the Lord is the main theme of Proverbs (1:7).
v.19-21 (Saying 15) Do not slumber. Here the parent directs the child to be wise and walk in the way (of wisdom). Overindulgence in food (23:1-3), wine (23:19-35), or sleep (10:5) results in poverty.

Proverbs 23:15-21