I remember hearing one of Mike Winger's sermons on suffering. He said something like "how much of the Psalms would not exist if it wasn't for suffering?" This is an interesting question. We often turn to the Bible seeking comfort in our suffering because it wasn't only written to help in times of suffering, but because a lot of it was a direct result of the author's personal anguish.
From injustice to illness to the chastisement of the Lord Himself for wrongdoing, the authors of the Bible suffered many things. Much of it was quite unimaginable to use today, at least in this country. David especially suffered so much that when I did a study of the Psalms with my friend, we established that he may have had depression.
I don't expect this message to instantly turn a frown upside down. Even if you are a faithful Christian with no wickedness worth speaking of, you're going to suffer, and it's not going to be much easier. But I can tell you that in your suffering, the Lord should be your first, second and third emergency contact. A doctor's presence does not automatically heal, but who will call such doctors if there is nothing for them to heal? Allow your suffering to push you closer to your Great Physician. I promise you, whatever you go through, even if it does irreversible harm in this life, will work out for His eternal purpose.