Was just listening to a Driscoll sermon on demons, and some interesting points came up. Points that I would have known but perhaps wouldn't always put in a simple way..
I liked this quote from Clinton Arnold:

"A servant of Christ can no more avoid demons than a gardener can avoid weeds

So if you serve Jesus then you are going to meet demons, it's just the way it is..

Satan is not equal to God (Satan was a CREATED thing)
Satan is not All knowing/All powerful/and Cannot be everywhere

Satan is not our only enemy..(the world/the flesh/the devil).
If you are being attacked spiritually it is probably not the devil. The devil can only attack one person at a time, he can send a limited number of demons to attack a limited number of persons. Satan would be harassing someone like Billy Graham, if you are being harassed it's probably one of Satan's servants..
The flesh is our inside and our own sick desires and many problems that we perhaps blame on Satan (I know I have done) are just our flesh. If Satan has only limited demons why would he send a demon to attack you, when you are already attacking yourself?
And again as Driscoll said:

"If you are in a battle and have your own gun in your mouth why would he send one of his few soldiers to attack you when you are going to kill yourself?"

THE WORLD: if you believe what everyone else believes, behave how everyone else behaves, then you are living a satanic life. The world tempts you to sin, to be a consumer rather than to give, to live for yourself etc..

Driscoll then goes on to talk about Avatar and stating how demonic the film is (false ideology etc)

But yeah check it out.. its MARS HILL, MARK DRISCOLL - LUKE: JESUS AND DEMONS