1.  Powerful is the man who isn't listening to culturally correct counselling, isn't cautiously trying to please everybody, and who doesn't see outright scorn and sarcasm as a reason for backing down from the truth.
2.  But he is so excited about the teachings of God that he spends time learning them every day and night.
3.  He shall be like a  giant-sized redgum tree by a great river, blossoming and seedbearing regularly each year, never looking even a little bit dry, and every year he'll be getting more and more successful at what he does.
4.  Outside of God there are no guarantees like that.  The wind can blow anywhichway for outsiders.
5.  They'll fall over when the rubber hits the road on the Day of the Lord, and narcissism won't work among God's faithful people.
6.  The Lord can easily pick out His faithful followers, but the others won't be able to hold their heads above water in the long run.