Book of Mormon, First Nephi 1:14-15

And it came to pass that when my father had read and seen many great and marvelous things, he did exclaim many things unto the Lord; such as: Great and marvelous are thy works, O Lord God Almighty! Thy throne is high in the heavens, and thy power, and goodness, and mercy are over all the inhabitants of the earth; and, because thou art merciful, thou wilt not suffer those who come unto thee that they shall perish! And after this manner was the language of my father in the praising of his God; for his soul did rejoice, and his whole heart was filled, because of the things which he had seen, yea, which the Lord had shown unto him.

This is the doctrine of Christ and the gospel of hope. Christ will ultimately save those who come to Him and follow Him and believe in Him. Though we deserve to perish forever in outer darkness, Christ will snatch us from our deserved fate and rescue us from our sins and shortcomings and bring us into His presence. We do not trust in ourselves, but we trust in Him who is mighty to save. He saves us from eternal death, not because we have earned it, but simply because He loves us. Christ's sole purpose in His magnificent life is to bring God's children into immortality and eternal life with Him. He has done, and will do, everything in His infinite power to accomplish His goal. All we have to do is choose to let Him do it for us. We just have to choose Christ and stop fighting Him, and He will set the Atonement to work in our lives, pour out His spirit upon us, teach us and tutor us, refine us through challenges and trials, and then bring us home. He does all the work, and we just have to submit, do our best, and be grateful.