If you desire that devotion be born in your spirit and that the love of God and the desire for divine things increase, cleanse your soul of every desire, attachment, and ambition in such a way that you have no concern about anything. Just as a sick person is immediately aware of good health once the bad humor has been thrown off and a desire to eat is felt, so will you recover your health, in God, if you cure yourself as was said. Without doing this, you will not advance no matter how much you do.
– St. John of the Cross