Defence against Psychic Attacks of the totalitarian-materialist kind

Traditional psychic attacks are (or were) of a spectacular nature; such as a person being made sick, or becoming possessed with mind and body under control from some evil spirit, or demon. 
While (apparently) still happening to some extent; modern psychic attacks are very different in form, much less spectacular, much more insidious, and so common as to be completely unnoticed. 

Traditional psychic attacks (supposedly) depend - to some degree - with someone inviting possession, or surrendering will to another being - a being that is motivated by self-gratifying emotions such as lust, power, or pleasure in inflicting pain. 
Modern psychic attacks are usually mundane, mainstream; indeed, so normal as to be completely unremarkable. 
They involve surrender to materialism, to the will of the totalitarian system, to the guidance of some external "group-mind", and abrogation of personal responsibility.

Such psychic attack is pervasive and continuous, and happens via official sources, educational institutions, the mass media, laws and regulations - and pretty much all of the major social institutions - the arts, science, the police and military - and the churches. 
In a world where all social institutions and groups are more or less, and increasingly, corrupted by the totalitarian agenda of evil; anyone who chooses to serve any institution; who chooses to take their facts, concepts, motivations etc. from the civilizational and social group-mind - any such person (and this may be a majority) has yielded willingly to this evil form of psychic attack.    
And in a societal world of pervasive spiritual corruption it all slips-by unnoticed. 
And most Christians are as much willing victims of such psychic attack as anyone else - because they have chosen to put their faith primarily in a social institution, to serve and obey a social institution. Because all major churches are system-converged; they devoutly blot-up the psychic attacks, along with their religion. 

Such psychic attacks are simply a part of the major strategy of evil; which is to induce people to deny/ ignore/ subordinate the spiritual; to think materially and put materialist reasoning first, to focus primarily on this mortal life and its conditions; and to be orientated-towards (and motivated-by) the normal, ordinary civilizational group-mind. 
When this has been achieved (as it very largely has by-now) then whoever controls the material world, control the minds as well. 
For example; censorship, selection and control of those perceptions and concepts that are regarded as high status, authoritative, official - worthy of consideration and belief - entails mind-control of those materialists who interact with them.  
So we find that victims of modern psychic attack are just normal, ordinary, decent, respectable people - modestly thinking and doing what such people think and do. 
(Intelligent, modest, sensible folk - because to reject the mind-control of specialized social institutions would be dumb, arrogant, or just insane.)
The fact that their minds and bodies are colonized by demonic will seems absurd because theirs is a majority behaviour. 

There is no defence against this demonic influence, unless it is acknowledged to be happening; and the Christian churches are net-agents of exactly this form of psychic attack - so they are not going to acknowledge it!  
As with all psychic self-defence, the Big Thing is Not to invite evil into one's self, Not deliberately to surrender one's will to an external will that system-assimilated; hence opposed to God and divine creation.
And instead to adhere to the principles of Christian faith that the material is only a sub-set of the larger spiritual world; that this mortal life is only a finite episode in our eternal lives; and that we are committed to following Jesus to eternal resurrected life in Heaven. 

Against the siren calls of materialism - of the escapist illusions of safety, power, pleasure; there is a determination to consider first love as primary value; and our personal and creative destiny in this mortal life; and to be rooted (as best we may) in that which is divine within our-selves; and our personal and direct relation with the Holy Ghost.