Spiritual warfare is real.  This excellent talk on the subject was given by Catholic priest and exorcist Father Clement Machado.  It's about 45 minutes but well worth the time.  It will open your eyes about a lot of things.  Father Machado ends his talk with an incredibly powerful and moving prayer of deliverance, exorcism and healing.  Join the battle - it may be your prayers that tip the scales against our enemy the Devil.  Listen to Father Machado here.