Pope Francis concludes his letter to Catholic bishops with prayer:
Upon you I invoke the Spirit of the risen Lord, that he may make you strong and firm in your service to the People of God entrusted to you by the Lord, so that your care and vigilance express communion even in the unity of one, single Rite, in which is preserved the great richness of the Roman liturgical tradition. I pray for you. You pray for me.
Regardless of one’s opinion of the Holy Father’s motu proprio, the best thing we Catholics can do consistently on this matter is to pray for others.
Here are the important links: