Peace can be possible in any situation, but we cannot produce it on demand. It is a Fruit of the Spirit.
God of hope, please fill me with all joy and peace as I trust in You, so that I may overflow with hope by the power of the Holy Spirit (Rom. 15:13). Let me hear joy and gladness; let the bones You have crushed rejoice (Ps. 51:8).
O God, those living far away fear Your wonders; where morning dawns and evening fades You call forth songs of joy. … The meadows are covered with flocks and the valleys are mantled with grain; help me to shout for joy and sing (Ps. 65:8, 13). For You care for me far more than the land You enrich abundantly. Flood my dry soul with the streams of God and fill me with joy (Ps. 65:9).