In the book of John Chapter 14 verse 27 it says "let not your hearts be troubled". If you just look around you there is much to be troubled by in the world. We are to be in the world and not of the world. (See John 17:15-17). The Bible says, "Rejoice you have overcome the world". (John 16:33). Do not give the enemy victory by sitting around wringing your hands and saying, "why Lord why?" the more you meditate on your blessings and God the less you will focus on what seems a disaster in your life. John 3:30 says "he must become greater and I must become less".
Things like negative comments, bad situations, politics, family situations, imagined problems and financial problems can you send you over the edge if you let them. You can become distraught, insecure, agitated, emotionally unstable, disturbed, forlorn, and just sick at heart. These things do not sound like qualities of a person with a peaceful spirit now do they? God doesn't want us fretting and bothered.
There is no problem too big for God to intervene and solve. He is God after all. No matter what thing is troubling you and keeping you unsettled God can lift you above your circumstances and cause you to have victory. Exalt the Lord higher than your problem no matter what it is.
Get your mind off your troubles by choosing to think good things and helping someone worse off than you. The fretting just opens a door for the enemy to try to get your mind off of praising and thanking God.
Romans 8:6 says "the mind of the sinful man is death, but the mind controlled by the spirit is life and peace."
PRAYER: Dear Lord help us not give the enemy control of us by sitting around bothered by everything. You want us to have peace and trust you. Father help me trust you and lean on you. In Jesus name, amen !