First, there is no perfection in the flesh! While we do not approve of our infirmities, failures, evil thoughts, or backslidings, we are, nevertheless, aware of their source: the flesh. And, because of that, we are also aware of the fact that this conflict and warfare will be with us until death. However, the next time you are plagues with coldness of spirit, prolonged bad attitude, and a worldly spirit, check and see if you are not neglecting the means of grace and your fellowship with Christ.
I find that when I am walking with Christ in sweet communion, frequently engaging in private prayer, participating in worship services and Bible study, and reading the Word of God, it is easier to forgive others, easier to overcome pride, envy, and jealousy and I am less interested in material things and more interested in that which of the Spirit. But if I neglect these means of grace I suddenly become more interested in those things which I really despise and begin acting in a way that is not glorifying to God.
If we will learn the power of the His precious blood, dwell in Him, feed upon His Word, and seek to occupy our thoughts with His gracious presence, then we will see our tempers controlled, our hearts filled with love for him and others, and our feet and hands swift to do works of faith and labors of love.