However great your suffering may be, consider that you have probably deserved them and that they are still far less than your guilt, since you have so often deserved hell. The time of suffering is the most precious time of all; spend it, not in complaining, but in eliciting acts of conformity with the will of God. Kneel down at the Redeemer's feet; lovingly kiss His sacred wounds, unite your sufferings with His and say at last: Lord, do not spare me here, but be merciful to me in the next world.
Always receive with thanksgiving the little crosses that God sends you. All punishments in this world are genuine acts of mercy.
[This is from The Gift of Self to God by Fr. Nicholas Grou, S.J.]