Things of the Soul, pg. 116; “Forgiveness from the Lord is earned through great personal effort. It takes courage to face the reality of your transgression, accept whatever penalty is required, and allow sufficient time for the process to work. When that is done, you will be innocent again. The Lord said: “I, even I, am he that blotteth out thy transgressions for mine own sake, and will not remember thy sins” (Isaiah 43:25).”
Matthew 12:31-32; “Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men. 32 And whosoever speaketh a word against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come.”
According to the book of Enos from the Book of Mormon forgiveness is granted because of faith, not great personal effort.