How do I keep my Mind safe and at peace?

How do I keep my Mind safe and at peace?

Summing it all up, friends, I’d say you’ll do best by filling your minds and meditating on things true, noble, reputable, authentic, compelling, gracious—the best, not the worst; the beautiful, not the ugly; things to praise, not things to curse. Put into practice what you learned from me, what you heard and saw and realized. Do that, and God, who makes everything work together, will work you into his most excellent harmonies. Philippians 4:8-9 MSG

Keep putting into practice all you learned and received from me—everything you heard from me and saw me doing. Then the God of peace will be with you. Philippians 4:9 (NLT)