Above all else, guard your heart, for everything you do flows from it. Keep your mouth free of perversity; keep corrupt talk far from your lips. Proverbs 4:23-24
Your life will play out based on the contents of your heart.
Be careful that you don't harbor guilt, shame, anger, vengence, jealousy, lust, or any other form of man-made trainwrecks. Those things will impact and shape your language. They will twist you up and make life harder than it has to be.
Every day, fill your heart with God's grace and allow it pour from your mouth. Keep your trajectory heading toward God.