You need not be despondent. Let those be despondent who do not believe in God. For them sorrow is burdensome, of course, because besides earthly enjoyment they have nothing. But believers must not be despondent, for through sorrows they receive the right of sonship, without which is impossible to enter the Kingdom of Heaven.
+ St. Barsanuphius of Optina, quoted from Living Without Hypocrisy: Spiritual Counsels of the Holy Elders of Optina