From Imitation of Christ by Thomas à Kempis:
[Note from Encyclopedia Britannica: “Thomas À Kempis, original name Thomas Hemerken, (born 1379/80, Kempen, near Düsseldorf, Germany—died Aug. 8, 1471, Bishopric of Utrecht, Netherlands), Christian theologian, the [recognized] author of Imitatio Christi (Imitation of Christ), a devotional book that, with the exception of the Bible, has been considered the most influential work in Christian literature.”]
It is good for us to have trials and troubles at times, for they often remind us that we are on probation and ought not to hope in any worldly thing. It is good for us sometimes to suffer contradiction, to be misjudged by men even though we do well and mean well. These things help us to be humble and shield us from vainglory. When to all outward appearances men give us no credit, when they do not think well of us, then we are more inclined to seek God Who sees our hearts. Therefore, a man ought to root himself so firmly in God that he will not need the consolations of men.
When a man of goodwill is afflicted, tempted, and tormented by evil thoughts, he realizes clearly that his greatest need is God, without Whom he can do no good. Saddened by his miseries and sufferings, he laments and prays. He wearies of living longer and wishes for death that he might be dissolved and be with Christ. Then he understands fully that perfect security and complete peace cannot be found on earth.
So long as we live in this world we cannot escape suffering and temptation. Whence it is written in Job: “The life of man upon earth is a warfare.”(1) Everyone, therefore, must guard against temptation and must watch in prayer lest the devil, who never sleeps but goes about seeking whom he may devour, find occasion to deceive him. No one is so perfect or so holy but he is sometimes tempted; man cannot be altogether free from temptation.
Yet temptations, though troublesome and severe, are often useful to a man, for in them he is humbled, purified, and instructed. The saints all passed through many temptations and trials to profit by them, while those who could not resist became reprobate and fell away. There is no state so holy, no place so secret that temptations and trials will not come. Man is never safe from them as long as he lives, for they come from within us — in sin we were born. When one temptation or trial passes, another comes; we shall always have something to suffer because we have lost the state of original blessedness.
Many people try to escape temptations, only to fall more deeply. We cannot conquer simply by fleeing, but by patience and true humility we become stronger than all our enemies.
[resources: Imitation of Christ]