If you didn’t have a tongue, you could still vocalize these three sounds: A (as in father), U (as in moon) and M (lips closed, nasalized). AUM is the primordial sound, the oral equivalent of the three primary colours. To reset the entire system, I recommend a few minutes of AUM in the morning and a few minutes in the evening. Children should be taught AUM in school. They’d be a lot more peaceful.
We often hear “Look at that” in reference to something beautiful, awful or interesting. We never hear “Look at nothing,” e.g., at the space between two objects in a room or between two thoughts. When we do that, you will notice, the mind stops.
We shift our attention from the outer to the inner world by maintaining a moment-to-moment awareness of every thought, feeling and action. Here ends the unobserved life. From now on, nothing happens inadvertently.