"Nurture the companionship of the Holy Ghost. The gift of the Holy Ghost is one of the most precious gifts you can receive in mortality. The Holy Ghost can become your guiding light. The Holy Ghost "will show unto you all things what ye should do." The Holy Ghost can be helpful to you in any righteous endeavor in which you are involved, including in school and among your friends.
However, the principal mission of the Holy Ghost is to testify of our Heavenly Father and His Beloved Son, Jesus Christ. If you are careful in keeping the commandments, the Holy Ghost will help you learn more about Heavenly Father and Jesus Christ. He will enlighten your mind as you ponder and study the scriptures each day.
The promptings of the Holy Ghost may come to you in a still, small voice. You cannot grow into the man you must become unless you first rise above the things of the world that clamor for your attention. For example, some of the world's music is degrading, vulgar, and inappropriate and will drown out the promptings of the Holy Ghost. Bringing into your body substances forbidden by the Lord in the Word of Wisdom will prevent you from feeling and recognizing the promptings of the Holy Ghost.
The failure to live a clean and chaste life deadens the promptings of the Spirit. Take your thoughts to higher levels than the vulgar and immoral. Avoid objectionable television shows and movies, evil Internet sites, and all forms of entertainment that portray or encourage immorality and violence. Shun pornography like a deadly, contagious sin and disease. You cannot afford to become addicted to its bondage and slavery. It will drive the Holy Ghost and His influence from your life. "