Do not get discouraged in your spiritual fight with the unseen enemy of our souls and if you will be wounded one hundred times a day, never leave your struggle. God is kind and merciful and will not allow for too many sorrows but only for those you need in order to learn about struggle. And you shall think about yourself that you are the lowest of them all.

(Translation from St. Macarius of Optina, Ne vorbesc stareții de la Optina, Editura Egumenița, p. 132)