The first step - want to get rid of it , and the key to that is to see it for what it is: sin in God's eyes. Jesus warned, "Anyone who is angry with his brother will be subject to judgment" (Matthew 5:22).
Recognize the toll anger and bitterness take on our lives. The Bible says, "An angry man stirs up dissension, and a hot-tempered one commits many sins" (Proverbs 29:22). It also says, "Refrain from anger and turn from wrath;
it leads only to evil" (Psalm 37:8). Never underestimate anger's destructive power.
The second step - confess it to God, and seek His forgiveness and help. On the cross Christ took upon Himself every sin you ever committedincluding your anger. God in His love and mercy not only promises to forgive our anger, but to cleanse it from our lives if we will let Him. No matter its cause, commit your anger to God, and ask Him to replace it with the Holy Spirit's fruit of "love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control" (Galatians 5:22-23). Notice: Anger is the exact opposite of every one of these. Anger flees when the Spirit's fruit fills our hearts.
Then take practical steps to deal with your anger. Avoid those situations when you might be more susceptible, and when you can't, pray about them in advance and ask God to help you. When you fail, be quick to seek not only Gods forgiveness, but also the forgiveness of those you hurt. If you have been harboring anger or bitterness or jealousy in your heart toward someonea parent, an ex-spouse, a bosshand it over to Christ, and ask Him to help you let it go.
In addition, discover the transforming power of forgiving others. Jesus said, "Bless those who curse you, pray for those who mistreat you" (Luke 6:28). You can't stay angry if you obey this command. Deliberately act toward others the way you should, even if you don't feel like it; changing our behavior eventually changes our emotions. The Bible says, "Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you (Ephesians 4:32).