Bitterness

http://www.realtime.net/~wdoud/topics/bitterness.html
Bitterness is one of the most crushing mental problems in a person's life. When a Christian is bitter, there is a loss of close fellowship with the Lord and a hindrance in one's relationship with the Lord Jesus Christ.. Bitterness causes a loss of many of the blessings of the normal Christian life, including emotional stability, peace, and joy. And bitterness results in the loss of production of good works (gold, silver, precious stones) which are a major source of blessing and reward in the plan of God.
Bitterness is a devastating mental attitude sin, and it triggers a wide range of other sins, such as:
Hatred, Cruelty, Antagonism, Self-pity, Unteachableness (implacability), Vindictiveness and desires for revenge, Prideful ambition (arrogance)

Recovery From Bitterness
Isa 38:17, "Behold, bitterness became deliverance to me. In Your love You have delivered my soul out of the pit of destruction; for You have cast all my sins behind my back."
. Confession of Sin
Personal sin leads to bitterness. You must deal with sin on a daily basis by confessing and moving on. If you don't do this, sin becomes a burden which clouds your joy, drains your spiritual energy, and destroys your productivity and vitality. In short, sin is always depressing.

1 John 1:9 states that when you confess your sins, God "is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness."
In privacy, make a list of your mental attitude sins, verbal sins, and behavior sins. Ask the Lord to make you aware of the habits of your own life. Respond immediately to the Holy Spirit when He uses the Word to spotlight your sin. Name the sin to God. Make it a spiritual habit to confess sins whenever they show up in your life.

• The Filling of the Holy Spirit

When the Holy Spirit in control, He produces His fruit (Gal. 5:12). The fruit of the Spirit does not include heaviness, bitterness, discouragement, disillusion, anguish, sadness, dejection, or loss of productivity.
o Love is free from bitterness.
o Joy pushes bitterness out.
o Bitterness can not coexist with peace in the soul of the believer filled with the Holy spirit.o Longsuffering gives the ability to deal with bitterness and other troubles.
o Gentleness, goodness, faith, meekness, and temperance are fruits of righteousness, which is divine good. Divine good takes the place of bitterness.

• Living in the Word:

By constant study and meditation in the Bible you are constantly reminded of God's viewpoint, of His Plan, of His provision, or His awareness of our spirit of bitterness and what He want to accomplish in us. Living in the sphere of human viewpoint is a source of bitterness. Living in the Word gradually transplants you to a new sphere, a new environment for your life, in which there is victory over bitterness.

• Orientation to Grace

Bitterness is often caused by people, most of the time by people we cannot escape, or people we love, or people we cannot confront, or people we trust. Grace Orientation includes the ability to look at people and see them as God sees them. It includes the ability to let them live their lives as unto the Lord, and trusting God to make His way clear to them. This technique lets people make mistakes without your judging them. It enables you to accept criticism without hurt or bitterness. It enables you to "esteem other better than yourself", to "do nothing through strife or vainglory."

• Occupation with Christ

The technique of Occupation with Christ helps to cure bitterness because it gets your eyes off your spouse, your children, your neighbors, your friends, and yourself. Instead, as you move through the day, you are thinking about the Lord Jesus Christ, His plan for your life, the Father's provision for each incident in your life, and His provision of wisdom for each decision you must make. Occupation with Christ is a by-product of the Faith-Rest Life. Bitterness is a by-product of occupation with self, with life, with problems.

http://www.jesus-is-savior.com/Believer