I offer this one without comment. It stands well enough alone. It's a long one and I have slightly edited it for length.
Oh Lord, my God, who created me in your image and likeness, grant me this grace that you have shown to be so great and necessary for salvation, that I may overcome my most evil nature that draws me to sin and perdition.
For I feel in my flesh the law of sin contradicting the law of my mind and leading me captive to obey sensuality in many things. I cannot resist the passions that result, unless your most holy grace is fervently infused into my heart and helps me.
There is need of your grace, O Lord, and of a great amount of it, so that a nature that has been prone to evil from youth may be overcome.
Thus it is, my God, that I delight in your law according to the inward person, knowing that your command is good, just, and holy, and reproving all evil and sin and teaching that it is to be avoided. But in the flesh I serve the law of sin obeying sensuality rather than reason.
Thus it is that the will to do good is present with me, but how to accomplish it I do not know.
Thus I often propose many good things, but because grace is lacking to help my weakness, I recoil and give up at the smallest resistance.
Thus it comes to pass that I know the way of perfection and see clearly how I should act, but being pressed down with the weight of my own corruption I do not rise to what is more perfect.
O Lord, your grace is entirely needful for me to begin anything good, continue with it, and accomplish it. For without it I can do nothing, but in you I can do all things when your grace strengthens me.
I beg you, O Lord, that I may find grace in your sight, for your grace is sufficient for me, even though I obtain none of the things for which nature longs.
If I am tempted and afflicted with many tribulations, I will fear no evil while your grace is with me. This alone is my strength — this alone gives me counsel and help.
This is stronger than all enemies and wiser than all the wise.
This grace is the mistress of truth, the teacher of discipline, the light of the heart, the consoler in anguish, the banisher of sorrow, the expeller of fear, the nourisher of devotion, the mother of tears.
Without grace I am but a withered branch, a useless piece of wood, fit only to be cast away.
Let your grace, therefore, O Lord, always go before me and follow me, and make me always inclined to good works, through your Son Jesus Christ. Amen.