How to have peace of mind? It obviously has to do with the mind. As long as you have a lot of thoughts, good or bad, going through your mind, you will not experience peace. "No thought" is the answer. What I really mean is allow only necessary thoughts and not clutter the mind with any useless thoughts. Naturally, the most necessary thought is the Lord. Think of him first always before all other necessary thoughts and you'll have peace.
1 Corinthians 2.2: "I resolved that while I was with you I would think of nothing but Jesus Christ, and him crucified."
1 Corinthians 2.2: "I resolved that while I was with you I would think of nothing but Jesus Christ, and him crucified."