"The practice of mental noting helps keep the mind on the meditation object and prevents you from getting distracted. But this technique is only a temporary crutch. You should stop using the mental notes when mindfulness is strong enough to observe objects without them. If you're not sure whether mindfulness is strong enough, don't worry. In fact, the labels will fall away automatically when no longer useful, so you don't have to make a deliberate decision to stop using them.
Labeling an object with a mental note should not be confused with recognizing and inwardly saying the ordinary name of the object, which is what we do in daily life as soon as we see or hear something. Nor should we confuse mental noting with describing the object further. Mental notes support mindfulness in the early stages by increasing momentary concentration. But even when using the noting technique, we should focus on the actual experience of the object instead of on the label, letting go of the conventional names, associations and meanings that in ordinary life are automatically attached to sense-impressions."http://www.vipassanadhura.com/howto.htm