Except that it's not really 'now' that the inner critic attacks. It's a few seconds or a minute ago. The inner critic depends upon comparison, and when we are fully aware in the present moment, when there is no past or future in our mind's awareness, there is nothing to compare. There is only what is, as it is. The inner critic disappears.

Mindful Eating: A Guide to Rediscovering a Healthy and Joyful Relationship with Food (ed. Shambhala Publications, 2009) - ISBN: 9781590305317