Excerpt from The Imitation of Christ

(Found here)

“We will never be free of trials and temptations as long as our earthly life lasts. For Job has said: ‘Is not the life of human beings on earth a drudgery?’ (Job 7:1). Therefore, we should always be on our guard against temptations, always praying that our enemy, the devil, ‘who never sleeps but constantly looks for someone to devour.’ (1 Pet 5:8), will not catch us off guard. No one in this world is so perfect or holy as not to have temptations sometimes. We can never be entirely free from them. Sometimes these temptations can be very severe and troublesome, but if we resist them, they will be very useful to us; for by experiencing them we are humbled, cleansed, and instructed. All the Saints endured tribulations and temptations and profited by them, while those who did not resist and overcome them fell away and were lost. There is no place so holy or remote where you will not meet with temptation, nor is there anyone completely free from it in this life; for in our body we bear the wounds of sin—the weakness of our human nature in which we are born.”

~Thomas á Kempis