In today's gospel, Jesus hits right to the heart of most family disharmony: siblings who don't get along. It puts parents in the middle and can make even the most mild tempered parent come unglued. Aside from the message here about God's love and His desire to repent, this gospel tells me something else. It tells me Jesus is acutely aware of the human condition.
One more thing: The older brother in the gospel story clearly felt jealous and unloved. Do you know your child's love language? Google Gary Chapman's five love languages and find out which language most communicates love to your child and spouse. When everyone feels their love tank is full, there is no need for jealousy and fighting.
Prayer: Father in heaven, thank you for the boundless mercy you show me every time I come back to you, sinful and fallen. Help me to reflect your love to my family in a way that is meaningful to each of them. In Jesus' name I pray. Amen.