At the beginning of meditation training thoughts will arrive one on top of another, uninterrupted, like a steep mountain waterfall. Gradually, as you perfect meditation, thoughts become like the water in a deep, narrow gorge, then a great river slowly winding its way down to the sea; finally the mind becomes like a still and placid ocean, ruffled by only the occasional ripple or wave.
Sogyal RinpocheAll too often people come to meditation in the hope of extraordinary results, like visions, lights, or some supernatural miracle. When no such thing occurs, they feel extremely disappointed. But the real miracle of meditation is more ordinary and much more useful. . . .
Sogyal Rinpoche