Even a pious person is not immune to spiritual sickness if he does not have a wise guide -- either a living person or a spiritual writer. This sickness is called prelest, or spiritual delusion, imagining oneself to be near to God and to the realm of the divine and supernatural. Even zealous ascetics in monasteries are sometimes subject to this delusion, but of course, laymen who are zealous in external struggles (podvigi) undergo it much more frequently. Surpassing their acquaintances in struggles of prayer and fasting, they imagine that they are seers of divine visions, or at least of dreams inspired by grace. In every event of their lives, they see special intentional directions from God or their guardian angel. And then they start imagining that they are God's elect, and often try to foretell the future. The Holy Fathers armed themselves against nothing so fiercely as against this sickness -- prelest.
Acts of charity, almsgiving and all the external good works do not suppress the arrogance of the heart; but noetic meditation, the labor of repentance, contrition and humility -- these humble the proud mind.
Blessed is he who remembers his death day and night and prepares himself to meet it. For it has a habit of coming joyfully to those who wait for it, but it arrives unexpectedly, bitterly, and harshly for those who do not expect it.
The temptation comes in accordance with one’s stature. And you must endure in order to emerge victorious. Christ, Who sets the contest, allows temptations for this reason: so that we may gain victories against the enemy, be purged from passions, and be perfected.
When we lack patience, our temptations seem greater than they really are. The more a person grows accustomed to enduring them, the smaller they become, & he passes through them effortlessly. Thus he becomes as solid as a rock.
With pain and tears you will receive grace, and again with tears and joy and thanksgiving, with fear of God you will keep it. With zeal it is drawn. With coldness and negligence it is lost.
The grace of the priesthood is one thing, the grace of the great schema is another, the grace of the Mysteries is different, and the action of grace in ascesis is also different. They all spring from the same source, but each one differs from the other in eminence and glory. The grace of repentance, which acts in those who struggle, is a patristic inheritance. It is a divine transaction and exchange in which we give dust and receive heaven. We exchange matter for the Spirit. Every drop of sweat, every pain, every ascesis for God is an exchange.
Live very modestly. Be very humble. Don't speak idly about humility, but be like rubbish for people to step on, if you want Christ to visit you. Your heart needs to become as soft as cotton.