Mindfulness is meditation in action and involves a "be here now" approach that allows life to unfold without the limitation of pre-judgment. It means being open to an awareness of the moment as it is and to what the moment could hold. It is a relaxed state of attentiveness to both the inner world of thoughts and feelings and the outer world of actions and perceptions.
~ from MINDING THE BODY, MENDING THE MIND by Joan Borysenko
Experiencing grace involves the expansion of consciousness of self to all of one's surroundings as an unbroken whole, a consciousness of awe from which negative mindstates are absent, from which healing and groundedness result. For these reasons grace has long been deemed "amazing."