The focus of life is determined by what we place our emphasis upon; the Kingdom of Heaven or our own personal earthly welfare.
If our emphasis is on God and His Kingdom our hearts will rest in His Peace; but if our emphasis is placed on our own personal welfare our hearts will be filled with turmoil and anxiety and our minds with worry.
The world does not and never has had the ability to give peace to the hearts of men; only God can bring peace to our hearts.
Jesus said, Peace I leave with you, my peace I give to you, not as the world gives do I give to you. Do not let your heart be troubled, or be afraid.
He spoke these things to us that His joy may be in us, and that our joy may be made full.
Let us than place our emphasis on God and not men.