Defend the City: A Call to Single Men
"We haven’t yet grasped the nature of the fight against lust if we think only in terms of individual skirmishes. Each act of disobedience certainly has its consequences; we all know the sting of immediate guilt, regret, and self-reproach. But no single battle destroys your city — no one failure robs your contentment, your manhood, and your soul. That only happens in stages, as habitual defeats gradually weaken your defenses and silence the sound of your war cries."