The enemy uses our own feelings of guilt, condemnation, fear, anxiety, worthlessness, hopelessness, self-hatred, and other negative emotions against us. These thoughts and feelings are in us because of what has happened to us in our past, even as recently as yesterday. Somewhere along the line we bought into the lies of the enemy. And because we are not aware of what God's Word clearly says about us -- or we don’t fully believe it – we don't discern what the enemy is doing. When we know the truth, we can put on the whole armor of God, and use God's Word as not only our shield of faith to combat those lies, but also as our greatest weapon against the purveyor of them.
(Excerpt from p. 145 in Stormie's book, "Prayer Warrior")