His indoctrinators must disorient him. His frames of reference for understanding himself and his surroundings must be challenged and broken down. Upsetting his view of reality disarms his natural defenses against concepts that challenge his reality. Unfreezing can be accomplished by using a variety of approaches. Disorienting a person physiologically can be very effective.
Sleep deprivation is one of the most common and powerful techniques for breaking a person down.
In addition, new diets and eating schedules also can have a disorienting effect. Unfreezing is best accomplished in a totally controlled environment, like an isolated country estate, but can be accomplished in more easily accessible places like a hotel ballroom. Hypnotic processes constitute another powerful tool for unfreezing and side-stepping a person's defense mechanisms. Sensory overload, like sensory deprivation, also effectively disrupts a person's balance and makes him more open to suggestion. A person can be bombarded by emotionally laden material at a rate faster than he can digest.