You cannot as yet defend yourself in this manner; but always meditate inwardly and say the daily prayers laid down by the holy fathers. By this I mean, try to recite the Third, Sixth, and Nineth Hours, Vespers and the night services. And, so far as you can, do nothing simply to gain the esteem or goodwill of others, and never bear ill will towards your brother, lest you separate yourself from God. Strive to keep your mind undistracted, always being attentive to your inner thoughts.
When you are in church, and are going to partake of the divine mysteries of Christ, do not go out until you have attained complete peace. Stand in one place, and do not leave it until the dismissal. Think that you are standing in heaven, and that in the company of the holy angels you are meeting God and receiving Him in your heart. Prepare yourself with great awe and trembling, lest you mingle with the holy powers unworthily.’
Arming the brother with these counsels and commending him to the Lord and to the Spirit of His grace (cf. Acts 20:32), Abba Philimon let him go.
Philokalia V2.351, A Discourse on Abba Philimon