“Our seventh struggle is against the demon of self-esteem, a multiform and subtle passion which is not readily perceived even by the person whom it tempts. The provocations of the other passions are more apparent and it is therefore somewhat easier to do battle with them, for the soul recognizes its enemy and can repulse him at once by rebutting him and by prayer.
The vice of self-esteem, however, is difficult to fight against, because it has many forms and appears in all our activities – in our way of speaking, in what we say and in our silences, at work, in vigils and fasts, in prayer and reading, in stillness and long-suffering. Through all these it seeks to strike down the soldier of Christ.
When it cannot seduce a man with extravagant clothes, it tries to tempt him by means of shabby ones. When it cannot flatter him with honor, it inflates him by causing him to endure what seems to be dishonor. When it cannot persuade him to feel proud of his display of eloquence, it entices him through silence into thinking he has achieved stillness. When it cannot puff him up with the thought of his luxurious table, it lures him into fasting for the sake of praise.
In short, every task, every activity, gives this malicious demon a chance for battle.”
— St. John Cassian