I witness that the Savior will strengthen and assist us to make sustained, paced progress. The example in the Book of Mormon of "many, exceedingly great many" in the ancient Church who were pure and spotless before God is a source of encouragement and comfort to me. I suspect those members of the ancient Church were ordinary men and women just like you and me. These individuals could not look upon sin save it were with abhorrence and they "were made pure and entered into the rest of the Lord their God." And these principles and this process of spiritual progress apply to each of us equally and always.