" focus of attention becomes distracted, when you notice you are no longer aware of the sensations of the breath, lovingly and gently bring your attention back to the breath (or body part or image). Getting distracted is just what our minds do. As we’ve seen, if you think of this mindfulness training as being similar to toning a muscle, we need to have both the contraction and the relaxation to achieve muscle growth. "

― Daniel J. Siegel , The Mindful Therapist: A Clinician's Guide to Mindsight and Neural Integration