Madonna is revealing her mantra for mothering. She shared a snapshot of her "House Rules" in an Instagram story Sunday by holding out a sign with her 5 non-negotiables clearly spelled out. "1. Smile, 2. Be Happy, 3. Listen to others, 4. Speak Kindness, 5. Be Happy with what you have," read the board held by Madonna. The singer is mom to twins Estere and Stella, 10, daughter Mercy James, 17, son David, 17, daughter Lourdes, 26, and son Rocco, 22.