O, GOD, giver and preserver of all life, by whose power I was created, and by whose providence I am sustained, look down upon me with tenderness and mercy; grant that I may not have been created to be finally destroyed; that I may not be preserved to add wickedness to wickedness. O, LORD, let me not sink into total depravity; look down upon me, and rescue me at last from the captivity of sin. Almighty and most merciful Father, who hast continued my life from year to year, grant that by longer life I may become less desirous of sinful pleasures, and more careful of eternal happiness. Let not my years be multiplied to increase my guilt; but as my age advances, let me become more pure in my thoughts, more regular in my desires, and more obedient to thy laws. Forgive, O merciful LORD, whatever I have done contrary to thy laws. Give me such a sense of my wickedness as may produce true contrition and effectual repentance; so that when I shall be called into another state, I may be received among the sinners to whom sorrow and reformation have obtained pardon, for JESUS CHRIST'S sake. Amen. From "Life of Johnson, Volume 4 1780-1784" by James Boswell
Boswell acknowledged Johnson as a most pious friend, who was by no means as wicked as the reader might imagine. Johnson was inclined to melancholy and to a deep sense of his own sinfulness, but any of us could make our own the last paragraph of this prayer.
Blake’s Jacob’s Ladder dates from some 20 years after Johnson’s prayer. May they both be received among the sinners who have obtained pardon.