From The Way of Perfection, chapter 28
It is a prayer that brings with it many blessings. This prayer is called "recollection," because the soul collects its faculties together and enters within itself to be with its God. And its divine Master comes more quickly to teach it... those who by such a method can enclose themselves within this little Heaven of our soul, where the Maker of Heaven and Earth is present, and grow accustomed to refusing to be where the exterior senses in their distraction have gone or look in that direction should believe they are following an excellent path and that they will not fail to drink water from the fount; for they will journey far in a short time.
The bolded part is the subject of the question.