Peace is one of the most common ways we feel the Lord's comfort and it comes through the power of the Holy Ghost. In the New Testament Christ said:

"Peace I leave with you, my peace I give unto you: not as the world giveth, give I unto you. Let not your heart be troubled, neither let it be afraid" (John 14:27).

When fear, doubts, or discouragement come remember what Paul said to Timothy, "For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind" (2 Timothy 1:7).

Elder Richard G. Scott of the Quorum of the Twelve Apostles taught:

"Peace and happiness are the precious fruits of a righteous life. They are only possible because of the Atonement of Jesus Christ....

"Each of us makes mistakes in life. They result in broken eternal laws.... If not resolved, broken laws can cause your life to be miserable and would keep you from returning to God. Only the life, teachings, and particularly the Atonement of Jesus Christ can release you from this otherwise impossible predicament" ("The Atonement Can Secure Your Peace and Happiness," Ensign, Nov 2006, 40–42).

To find that eternal peace we must repent and accept the Atonement of Jesus Christ.