Exploring the Mind by Sam Harris, http://www.samharris.org/blog/item/chapter-one
In the beginning of one’s meditation practice, the difference between ordinary experience and what one comes to consider “mindfulness” is not very clear, and it takes some training to distinguish between being lost in thought and seeing thoughts for what they are. In this sense, learning to meditate is just like acquiring any other skill. It takes many thousands of repetitions to throw a good jab or to coax music from the strings of a guitar. With practice, mindfulness becomes a well-formed habit of attention, and the difference between it and ordinary thinking will become increasingly clear. Eventually, it begins to seem as if you are repeatedly awakening from a dream to find yourself safely in bed. No matter how terrible the dream, the relief is instantaneous. And yet it is difficult to stay awake for more than a few seconds at a time.
My friend Joseph Goldstein, one of the finest vipassana teachers I know, likens this shift in awareness to the experience of being fully immersed in a film and then suddenly realizing that you are sitting in a theater watching a mere play of light on a wall. Your perception is unchanged, but the spell is broken. Most of us spend every waking moment lost in the movie of our lives. Until we see that an alternative to this enchantment exists, we are entirely at the mercy of appearances. Again, the difference I am describing is not a matter of achieving a new conceptual understanding or of adopting new beliefs about the nature of reality. The change comes when we experience the present moment prior to the arising of thought.
Daudz vārdu, dažas domas.