Many people, when angry, simply will not admit their anger. They say, "I am NOT angry!" Others admit that they have a temper but do not see it as a serious sin or even an issue.
Actually, temper is one of the worst sins as far as having deep consequences in the Word of God. The Bible lists uncontrolled anger along with such sins as drunkenness, witchcraft, adultery, and murder and says that those who continue to do these things will not inherit the Kingdom of God.
Galatians 5:19-21 ESV Now the works of the flesh are evident: sexual immorality, impurity, sensuality, (20) idolatry, sorcery, enmity, strife, jealousy, fits of anger, rivalries, dissensions, divisions, (21) envy, drunkenness, orgies, and things like these. I warn you, as I warned you before, that those who do such things will not inherit the kingdom of God.
We would not see anger as no big deal but God places it in the list with gross sexual sins. Temper is simply not acceptable in the life of a Christian. The Bible says,
Ephesians 4:31-32 ESV Let all bitterness and wrath and anger and clamor and slander be put away from you, along with all malice. (32) Be kind to one another, tenderhearted, forgiving one another, as God in Christ forgave you.
Unless we see the seriousness of our temper and determine to be delivered from it, we will not overcome it. If we are satisfied to go on as we have been going, we will know nothing of God's victory over the sin of our temper. In seeing our need we must not excuse our temper and anger as just the way we are and being a part of our personality. This would be justifying sin. The Father desires that we walk in His love, mercy and grace at all times, even when our "buttons" are being pushed and we are being provoked.