"Our spiritual journey is the process of a lifetime. We do not know everything in the beginning or even along the way. Our conversion comes step-by-step, line upon line. We first build a foundation of faith in the Lord Jesus Christ. We treasure the principles and ordinances of repentance, baptism, and receiving the gift of the Holy Ghost. We include a continuing commitment to prayer, a willingness to be obedient, and an ongoing witness of the Book of Mormon. (The Book of Mormon is powerful spiritual nourishment.)
We then remain steady and patient as we progress through mortality. At times, the Lord’s answer will be, 'You don’t know everything, but you know enough'—enough to keep the commandments and to do what is right. Remember Nephi’s words: 'I know that he loveth his children; nevertheless, I do not know the meaning of all things.' (1 Nephi 11:17)" (Elder Neil L. Andersen)
We can and do know enough as we put our Faith and Trust in God! He will bless us as we act in faith, even when it seems we don't know enough!