Proverbs 12:15. A person that trusts only himself to make good judgment is a fool and is not wise. God created us to rely on Him for His purposes. He is our moral compass who we should trust to make good decisions in life. Without a relationship with God, our Creator, we lose our direction.
Proverbs 12:16. All of us get angry. What is important is how do we control your anger. Not all anger is bad, but uncontrolled anger results in bad things. The Bible tells us that fools do not control their anger, but will act in anger whenever anger presents itself.