If we are not humble, we tend to demand that faith must also bring with it good health, peace of mind, good luck, success in business, popularity, world peace, and every other good thing we can imagine. And it is true that God can give us all these good things if [God] wants to. But they are of no importance compared with faith, which is essential. If we insist on other things as the price of our believing, we tend by that very fact to undermine our own belief. I do not think it would be an act of mercy on God’s part simply to let us get away with this!
Source: New Seeds of Contemplation