- Composure: Practised at resisting charm, intimidation, and other social pressures. Those with strong Composure are gifted at maintaining their integrity in the face of temptation.
- Fear: Mentally hardened to stand firm in the face of the unnatural fear caused by exposure to heretical and corrupt beings. Fear is often used to resist and recover from the Frightened Condition.
- Psychic: Advanced training in mentally resisting various Unknown that can unduly influence or suborn one’s mind.
Discipline is a measure of a character’s ability to stubbornly resist outside influences. This usually requires a high degree of self-control, particularly in stressful situations, and thus makes it a valuable tool in a person’s arsenal to protect them from the dangers of the darkness. The Daemon, the psyker, the Mutant, and the xenos all offer temptations of the mind, the spirit, and the flesh, and succumbing to any of these can lead to irredeemable levels of corruption. "The faithful must remain vigilant in their asceticism and self-control. Otherwise, even the slightest misstep toward comfort and complacency can grant a toehold to heresy".