“Watching is the key of meditation: watch your mind. Don’t do anything – no repetition of a mantra, no repetition of the name of god – just watch whatever the mind is doing. Don’t disturb it, don’t prevent it, don’t repress it; don’t do anything at all on your part. You just be a watcher, and the miracle of watching is meditation. As you watch slowly, slowly mind becomes empty of thoughts; but you are not falling asleep, you are becoming more alert, more aware.

As the mind becomes completely empty, your whole energy becomes a flame of awakening. This flame is the result of meditation. So you can say meditation is another name of watching, witnessing, observing – without any judgement, without any evaluation. Just by watching, you immediately get out of the mind.”
Osho, What is Meditation.