After confessing our sins, we say an Act of Contrition.
We tell God that we are going to stop sinning when we know darn well that it’s not true no matter
how sorry we really are. Who are we kidding?
All we can do his strive to never sin and when we do, get back where Jesus’ boundless Mercy can be applied - the confessional:
Jesus to saint Faustina:
Write, speak of My mercy. Tell souls where they are to look for solace; that is, in the Tribunal of Mercy. There the greatest miracles take place [and] are incessantly repeated. To avail oneself of this miracle, it is not necessary to go on a great pilgrimage or to carry out some external ceremony; it suffices to come with faith to the feet of My representative and to reveal to him one’s misery, and the miracle of Divine Mercy will be fully demonstrated. Were a soul like a decaying corpse so that from a human standpoint, there would be no [hope of ] restoration and everything would already be lost, it is not so with God.
The miracle of Divine Mercy restores that soul in full. Oh, how miserable are those who do not take advantage of the miracle of God’s mercy! You will call out in vain, but it will be too late. (1448)
Today the Lord said to me, Daughter, when you go to confession, to this fountain of My mercy, the Blood and Water which came forth from My Heart always flows down upon your soul and ennobles it. Every time you go to confession,
immerse yourself in My mercy, with great trust, so that I may pour the bounty of My grace upon your soul. When you approach the confessional, know this, that I Myself am waiting there for you.** I am only hidden by the priest, but I myself act in your soul. Here the misery of the soul meets the God of mercy**. Tell souls that from this fount of mercy souls draw graces solely with the vessel of trust. If their trust is great, there is no limit to My generosity. The torrents of grace inundate humble souls. The proud remain always in poverty and misery, because My grace turns away from them to humble souls. (1602)
My daughter, just as you prepare in My presence, so also you make your confession before Me.
The person of the priest is, for Me, only a screen. Never analyse what sort of a priest it is that I am making use of; open your soul in confession as you would to Me, and I will fill it with My light. (1725)