About This Answer
Asked what practice helps let go of attachment to the body and to one's family, Ajahn Dtun explains that if the mind is attached to another person's body, one contemplates that body to see its impermanence and that it is not self. If the mind is attached to one's own body, one contemplates it in the same way. Reflecting on both one's own body and the bodies of others, one can let go of attachment and identification.
He describes four ways of contemplating the body. The first is recollection of death (maraṇānussati). The second is the thirty-two parts of the body, seeing that they are impermanent, not self and inherently unclean. The third is asubha, the unattractiveness of the body, seeing it in various stages of decomposition. The fourth is the elements that make up the body: earth, water, fire and wind. All four are ways for the mind to gradually let go of its clinging to the body.
He says that contemplating death alone can transform the mind to the first stage, stream-entry. Contemplating death and the parts of the body can be enough for the second stage, once-returning. Contemplating the unattractiveness of the body and its elements, penetrating through to the voidness of body and mind and letting go of the body again and again, can lead the mind to non-returning. One who attains this third level completely removes greed, aversion and sensual desire from the heart.