Once the mind is internalized, then you have to practice Dharana or concentration on your chosen object of meditation using effort and focus. (yogicwayoflife.com)
Similarly, it has long been known that meditation on a single object, idea or sound not only causes other stimuli to recede to the vanishing point; after a time the focused object of meditation also seems to be called away, leaving a focused point of nothingness or pure consciousness,» as it is known in such traditions as Zen Buddhism. (religion-online.org)
In his national best seller, Healthy Aging, Harvard - trained physician, Dr. Andrew Weil states, «Meditation is... focused attention, directed inward or outward — to the breath, for instance... probably the most natural object of meditation.» (yogaforslowliving.com)