Ephesians 6:16-18 NLT - In addition to all of these, hold up the shield of faith to stop the fiery arrows of the devil.  Put on salvation as your helmet

Why do you think we are told to, ‘Put on salvation as your helmet’?  This is because most of our battles are fought in the mind. Fear happens right where we live, in our minds.  The enemy seeks to influence our lives by throwing things at us that make us afraid.  But if we get the message that God really loves us, the fire of his attacks can be extinguished.

God’s love revealed in His word is like water to extinguish the fire of fear.The Holy Spirit is the fireman who has been sent to wield the hose.  Think of it, He is our comforter, the one who comes along side to help and to give us courage.  He is the one who applies the bible to our hearts.  As He does so, he reveals to us that every one of our fears can be met with a promise from the bible.

That puts new meaning on keeping a cool head.