Dirty mouth or dirty heart?
9 With it we bless our God and Father, and with it we curse men, who have been made in the similitude of God. 10 Out of the same mouth proceed blessing and cursing. My brethren, these things ought not to be so. 11 Does a spring send forth fresh water and bitter from the same opening?
As Christians, it is important to be examples in everything we do and say. When you say hurtful things, curse or spout off in anger, you weaken your Christian walk to those witnessing it.
Our mouth speaks from our heart (Matthew 12:34), so the lack of control is more of a heart condition than a mouth problem. Get into the word and get your heart healthy, then your tongue will follow along.
If you don’t know Jesus, please let me introduce you.