Everyone knows that life isn't perfect so the trials frustrate our souls. When a person is frustrated then that person can become angry or have self-control.
The sinful nature will become angry. If a person is control by the sinful nature then anger will occur.
Mankind needs to give their souls to the Lord. When the Lord is in a person heart then that person will have the fruit of God.
If you have anger issues then you need to surrender to the Lord.
Jesus died on the cross and conquered death. If a person repents from their sins and follow Jesus. Then that person will go to heaven. If a person have Jesus then their is new heart.