Paul wrote that he and the the disciples who were with him were troubled on every side.  I know that you sometimes are overwhelmed by all the darkness in the world.  My light can penetrate that darkness.  

There will always be trouble.  I told My disciples that in the world they would have tribulation.  Then I assured them that they could still be of good cheer because I had overcome the world.

You and all those who have surrendered their lives to Me are in the world, but not of the world.  When I died on the cross and was resurrected, I won the victory over the god of this world who is the devil.

2 CORINTHIANS 4:8