The Vice of Envy- a book which is part of the Spiritual Life Series vol. 7 by Hieromonk Gregorios, Elder of the Cell of St. John the Theologian, Koutloumousiou Monastery, Mount Athos. Trans. by Fr. Michael Monos, Trim size 4x6, 68pp.

All passions devastate the soul, but the most destructive of them is envy.  "envy wastes away the soul through continual, sorrow at the happiness of one's fellow-man."