Do not let the sun go down on your wrath. Confess evil anger to God and the church and ask for forgiveness. Strive to become a meek man or woman who is controlled by the Holy Spirit. Pour out the anger and be filled with God's Spirit. Remember that the person you want to become angry with was created in the image of God.
Pride is usually the sin that causes all other sins.
Pride is thinking that you are better than someone else. It is wrong if you think that you are better than your spouse. Do not think that you are more important to God than your spouse. Jesus shed His blood to forgive your partner's sins just as he shed it to forgive your sins. Self-respect is different from pride.