I will not ask God to deliver you from your trials, but I will ask him earnestly to give you the patience and strength needed to suffer as long as he desires. Find consolation in him, who keeps you fixed to the cross; he will release you when he judges it appropriate. Happy are they who suffer with him. Get used to suffering, and ask him for the strength to suffer as he wants, and for as long as he judges necessary.
The worldly do not understand these truths, and I am not surprised; the reason is that they suffer as citizens of this world and not as Christians. They consider illnesses as natural afflictions and not as graces from God, and therefore they find in them only what is difficult and harsh for [our] nature. But those who regard them as coming from the hand of God, as signs of his mercy and the means he uses for their salvation, ordinarily find great sweetness and perceptible consolations in them.
Brother Lawrence of the Resurrection, O.C.D.
Letter 11 to a nun, 17 November 1690
Lawrence of the Resurrection, B; De Meester, C 1994, Writings and Conversations on the Practice of the Presence of God, translated from the French by Salvatore Sciurba, OCD, ICS Publications, Washington DC.