Isaiah 26:3 (NLT)
3 You will keep in perfect peace all who trust in you, all whose thoughts are fixed on you!

It is the character of every good man that he trusts in God, puts himself under his guidance and government, and depends upon him that it shall be greatly to his advantage to do so. Those that trust in God must have their minds stayed upon him, must trust him at all times, under all events, must firmly and faithfully adhere to him, with an entire satisfaction in him; and such as do so God will keep in perpetual peace, and that peace shall keep them. When evil tidings are abroad those shall calmly expect the event, and not be disturbed by frightful apprehensions arising from them, whose hearts are fixed, trusting in the Lord. [Matthew Henry Commentary]

Chuck Swindoll shares the following story about a conversation with a Christian leader who started a new ministry for the Navigators in Uganda. The man told Swindoll that after much discussion and prayer, he and his wife were convinced that God wanted them to move to Uganda. So they uprooted their family and flew to Kenya, where he put his family up in a hotel so he could rent a Land Rover and travel across the border into Uganda.

At this point he definitely needed the kind of encouragement only God can give. The man told Swindoll, "I dropped to my knees, and I said, 'Lord, look, I'm afraid. I'm in a country I don't know, in a culture that's totally unfamiliar. I have no idea who sleeps in that bed. Please, show me that you're in this move!'"

And then, he said, "Just as I was finishing my prayer, the door flung open, and there stood this six-foot five-inch African frowning at me, saying in beautiful British English, 'What are you doing in my room?'"

"I kneeled there for a moment, and then I muttered, 'They gave me this bed, but I'll only be here one night.'"

"What are you doing in my country?" the African asked.

"Well, I'm with a [Christian] organization called the Navigators."

"Ahh! The Navigators!" Suddenly the tall African broke into an enormous grin, threw his arms around his new roommate, and laughed out loud as he lifted him up off the floor and danced around the room with him.

"Praise God, praise God," said the African. "For two years I have prayed that God would send someone to me from this organization." And he pulled out a little Scripture memory-verse pack and pointed to where, at the bottom of each of the verses, it read, "The Navigators, Colorado Springs, Colorado."

This Ugandan eventually became a board member for the new Navigators ministry in Uganda. He helped the American leader find a place to live, assisted him with the language, and became the Navigator staff member's best friend. [Chuck Swindoll, Embraced by the Spirit (Zondervan, 2011)]

Fix your thoughts on God and He will provide you with the perfect peace you need.