Don't desire the sort of things wicked people want and have, says Proverbs. (Goodfellas is a good movie and all, but not a selection of choice role models.)
Also, in case you haven't realized it yet, wisdom is really great. It can help you build up a nice household and win wars.
The author praises courage and a willingness to rescue people who are being sent to the slaughter, saying that God will repay you if you fail to live up to these responsibilities.
Wisdom is like honey—they're both really good and sweet and you should eat them (a little pro-sweet-tooth sentiment from Proverbs here).
No matter how many times they run into obstacles and fall down, the righteous get back up. But the wicked will eventually be struck down in one fell swoop.
You shouldn't rejoice when your enemies fall, because then God will take it easy on them (so, don't rejoice and God will, you know, totally punish them).
So, keep obeying God—oh, and the king too—and everything will work out in the end.
A Fixer-Upper Vineyard
A new section begins: "Further Sayings of the Wise."
You should judge impartially and always give honest answers. Don't be a witness against your neighbors for no good reason, and don't vengefully try to repay people for wrongs they've done to you.
The chapter ends with the author stating that he was walking by a vineyard owned by a lazy, stupid person. He sees that it is all broken down and overgrown, and he realizes that this is what a little laziness leads to: poverty and ruin.