Here is St. John of the Cross on this goal.
If a model for the painting or retouching of a portrait should move because of a desire to do something, the artist would be unable to finish and the work would be spoiled. Similarly, any operation, affection, or thought a soul might cling to when it wants to abide in interior peace and idleness would cause distraction and disquietude, and make it feel sensory dryness and emptiness. The more a person seeks some support in knowledge and affection the more the soul will feel the lack of these, for this support cannot be supplied through these sensory means. 10.6. Accordingly, such persons should not mind if the operations of their faculties are being lost to them; they should desire rather that this be done quickly so they may be no obstacle to the operation of the infused contemplation God is bestowing, so they may receive it with more peaceful plenitude and make room in the spirit for the enkindling and burning of the love that this dark and secret contemplation bears and communicates to the soul. For contemplation is nothing else than a secret and peaceful and loving inflow of God, which, if not hampered, fires the soul in the spirit of love
These blessings are attained when by means of this night the soul departs from all created things, in its affections and operations, and walks on toward eternal things. This is a great happiness and grace: first, because of the signal benefit of quenching one's appetite and affection for all things; second, because there are very few who will endure the night and persevere in entering through this narrow gate and treading this constricted road that leads to life, as our Savior says [Mt. 7:14].