Hieromartyr Bishop Arseny (Zhadanovsky). "Spiritual Diary".
Once I was told about the following case concerning frequent Communion. One woman used to receive Communion every day. She attracted attention of the clergy authority. A confessor was instructed to check her. In view of the internal state of this lady he asked her to confess before every Communion and when he considered it inconvenient, he advised her not to approach the Holy Chalice. But such a spiritual guidance was too late for her. She did not hesitate and continued to receive the Communion every day, going from one church to another. Then she was traced and never admitted to the Holy Communion. And this lady came to not seeking to receive the Communion in the church and imagined that she had already been given the Divine right to consecrate bread and wine herself, and took the Communion every day at home, making so-called Liturgy with prosphora and wine. Her case, however, ended sadly. She lost her mind and she is currently in the mental hospital.
Thus, Holy Communion should be treated with great reverence; it should be taken with a humble feeling every time, otherwise a frequent and unworthy taking of Holy Communion may be a ground for self-delusion. Once a woman came to me in the church and began reprimand me for she was not admitted to the Holy Communion every day, and by the way, on my question, whether she confessed her sins and whether she deserved every day, as a woman, to take the Holy Communion, she replied that she had no sins. Another woman required the daily Communion, while she reeked of tobacco. The Holy Communion is great, but its greatness requires great preparation, the great dignity for its taking. "For it is a coal that burns the unworthy". (Prayer before the Holy Communion).