1. Faith without works is dead (James 2:26) and the works of faith are: love, peace, long-suffering, mercy, humility, rest from all works (as God Himself rested from His works), bearing of the Cross, and life in the Spirit.
2. SORROW: He who has overcome the passions has also overcome sorrow. But he who has been overcome by passions will not escape the chains of sorrow. As a sick man is known by the color of his face, so one who is possessed by passions is given away by his sorrow.
(Little Russian Philokalia Vol.1: St. Seraphim )