I've been using this prayer for my morning devotion this week, and am really growing to love it. It may gain a permanent spot on the daily devotions roster.
I especially like the part about asking God to deliver us from "stony hardness of heart", which is not regarded as the profound sin that it actually is, but is often mistaken for a sign of manliness or coolness or worldly competence.
O Lord, deprive me not of Thy heavenly blessings;
O Lord, deliver me from eternal torment;
O Lord, if I have sinned in my mind or thought, in word deed, forgive me.
O Lord, deliver me from every ignorance and heedlessness, from pettiness of the soul and stony hardness of heart;
O Lord, deliver me from every temptation;
O Lord, enlighten my heart darkened by evil desires;
O Lord, I, being a human being, have sinned; do Thou, being God, forgive me in Thy lovingkindness, for Thou knowest the weakness of my soul.
O Lord, send down Thy grace to help me, that I may glorify Thy holy Name;
O Lord Jesus Christ, inscribe me, Thy servant, in the Book of Life, and grant me a blessed end; O Lord my God, even if I have done nothing good in Thy sight, yet grant me, according to Thy grace, that I may make a start in doing good.
O Lord, sprinkle on my heart the dew of Thy grace;
O Lord of heaven and earth, remember me, Thy sinful servant, cold of heart and impure, in Thy Kingdom.
O Lord, receive me in repentance;
O Lord, leave me not;
O Lord, save me from temptation;
O Lord, grant me pure thoughts;
O Lord, grant me tears of repentance, remembrance of death, and the sense of peace;
O Lord, grant me mindfulness to confess my sins;
O Lord, grant me humility, charity, and obedience;
O Lord, grant me tolerance, magnanimity, and gentleness;
O Lord, implant in me the root of all blessings: the fear of Thee in my heart;
O Lord, vouchsafe that I may love Thee with all my heart and soul, and that I may obey in all things Thy will;
O Lord, shield me from evil persons and devils and passions and all other lawless matters;
O Lord, Who knowest Thy creation and that which Thou hast willed for it; may Thy will also be fulfilled in me, a sinner, for Thou art blessed forevermore.