The choice of companions is critically important. An angry, furious person is described here as someone to actively avoid — not just once, but in ongoing relationship. The reason follows in the next verse: their ways will rub off on you. This is an honest warning about the shaping power of those we spend time with.
Memory phrase: Avoid angry companions.
Talk about it: How do the people you spend time with affect the way you act?
Prayer: God, help me choose friends who are calm and wise.