What is the strong remedy for foul language, insults, and obscenity in speech for someone who engages in much remembrance of God but changes when provoked?

Whoever feels that God is watching him and that he will be questioned about all his actions will fear God and hold himself accountable. It is enough for a believer to know the danger of foul language and the importance of good character. God has mentioned the pious who deserve forgiveness and Paradise as those who suppress their anger and pardon people. "Whoever suppresses his rage while he is able to unleash it, Allah will call him on the Day of Resurrection before all creatures and let him choose from the houris of Paradise whichever he wishes."