Heavenly comfort is promised to those who have been tried.
I have never found anyone, however religious and devout, who did not sometimes experience withdrawal of grace, or feel a lessening of devotion. And no Saint has ever lived, however highly rapt and enlightened, who did not suffer temptation sooner or later. For he is not worthy of high contemplation who has not suffered some trials for God’s sake. Indeed, the temptation that precedes is often a sign of comfort to follow. For heavenly comfort is promised to those who have been tried and tempted. `To him who overcomes,’ says God; `I will give to eat of the Tree of Life'(Rev. 2:7).
Thomas a Kempis – The Imitation of Christ