Warfare Progression
Suggestions —>Thoughts —>Beliefs —>Behavior —>Lifestyle
Suggestions accepted as our own thoughts formulate beliefs which dictate behavior that makes up a lifestyle.
If we recognize that every suggested thought does not come from only ourselves but can also come from two other outside influences (God or Satan/Demon), then we are equipped to begin choosing what we accept as our own thoughts and what we reject (2 Cor 10:5). By exercising our freewill in thinking (become a free thinker), we slip free from the clutches of demonic control.
The first step in waging spiritual warfare is to first recognize that there is in fact a war... and the battle field is the mind.