I have an enormous fondness for St. Peter. He's so relatable. He fumbles and falters, speaks too soon and says stupid stuff, denies and doubts....and yet....
Jesus still picks Peter as leader - "You are Peter, and upon this rock, I shall build my Church."
This gives hope to all of us who falter and doubt - Jesus can still use us, still loves us, still trusts us.
O Glorious St. Peter, because of your vibrant and generous faith, sincere humility and flaming love our Lord honored you with singular privileges and especially leadership of the whole Church. Obtain for us the grace of a living faith, a sincere loyalty to the Church, acceptance of all her teachings, and obedience to all her precepts. Let us thus enjoy an undisturbed peace on earth and everlasting happiness in heaven. Amen.