"I will sing of steadfast love and justice; to you, O LORD, I will make music." Psalm 101:1
David is here the lord of his own house (v 2). He has in mind not only his kingship, but the quietness of his own home and how he carries himself there. And he begins with singing.
Let a man cheerfully go about his business, with a song in his heart. "Glad songs of salvation are in the tents of the righteous" (Psalm 118:15). May the Christian heart and the Christian home be seasoned with songs of the Lamb's triumph.
A Christian's life is a song sung unto God. May he grant you to see your life this way, beloved. In the quiet (or hectic!) affairs of today, offer to God a cheerful heart as you go about your business. It will be music to his ears and peace to your soul.