Paying attention...a non-judgemental, non-manipulative, non-grasping, non-rejecting, kind of attention to the body in the body...just the body as such...not one's feeling, ideas, concerns, or interpretations about it. How do we know the body? How are we established in this first domain of mindfulness? Are you looking in the right place and in the right way for the happiness that you are seeking?
What moves you towards spiritual practice? We are stirred and moved and inspired to practice through various experiences that goes on within our own body-mind process and by phoenomena that goes on in the world around us. Listen to stories of people being stirred to a sense of samvega-spiritual urgency from the time of the Buddha, right up to stories from our time-now.
When the heart/mind is free from the narrowness of self-clinging, the natural response to beings and the world is that of metta/karuna: friendliness & compassion