The relentless attacks that disturb body and mind, robbing you of sleep, are a tempest indeed. In the spiritual life, we see that among the angels there is no disturbance, no turmoil, for their desires are dead to luxury and they know only necessity. But in our present state, great is the tempest, and yet great is the haven that awaits those who cling to Christ. Remember what I have taught: the saints among us, by the orderly state of their souls and their great fear of God, do not descend into the depths of sleep with snoring or wild tossing. Their sleep is light, their dreams free of monstrous visions, because their hearts are not stifled by excess and their minds are wakeful even in rest. This wakefulness of soul, this clarity of mind, is the mark of those who stand by the King, like eunuchs who are spotless, quick-sighted, and not sleepy.
You ask for protection. The root of these disturbances often lies in the burdens of sin, for the covetous and those entangled in worldly gains are filled with anxieties, fears, and ceaseless turmoil, like a sea never without waves. Yet the essence of your soul is not to blame, a work of God, but your will must be directed aright. Willing is natural, but willing what is good is from your own mind, with God's grace.
Consider Christ in His agony. Though He was troubled and desired to live, He did not turn back but said, "Glorify Thy Name," facing the Cross for the truth. By this He taught us that even in our dread we must not shrink from what is set before us, but call upon God's glory. He sought the garden often with His disciples, a place free from distraction, to converse on necessary matters and to grant them freedom from fear. That same garden became the scene of betrayal, yet even there, His presence brought calm to those who entered with Him. You are part of His Body; partaking of that Body and Blood, you are united to the very One adored by angels. Set your mind on things above, where Christ is seated. How then can these attacks overwhelm you when you are a member of that Body? The differences among members only strengthen the unity in honor. As Joseph, being raised from sleep, obeyed the angel with a submissive mind and a soul truly wakened, so rise from the drowsiness of despondency. Do not let these disturbances master you. Call upon the name of Jesus, for He has freed us from fear. Let your prayer be not for an easy path but that God's name be glorified in your trial. Then the peace that surpasses understanding will guard your heart and mind, and even your sleep will be restored, light and composed, a haven amidst the storm.