[502 words] One of the great passages in the Bible on having peace of mind is in Philippians 4. Here are the keys: Make up your mind to be happy. “Rejoice in the Lord alway: and again I say, Rejoice” (v.4). Abraham Lincoln said a man is about as happy as he makes up his mind to be. There are heartaches we can’t avoid, but there is great joy in the Lord if we will just choose it. Learn to yield to others. “Let your moderation be known unto all men” (v.5). This moderation means to be reasonable, fair, and gentle. If you insist on always having your way you will never be at rest inside. Don’t worry! “Be careful for nothing” (v.6). Don’t worry or be anxious. Worry is a choice. It is a habit, and a bad one at that. Worry is unproductive, harmful, and often unfounded. The…