In understanding and relaxing the boundaries of self we step back and listen internally with goodwill, discovering what has to be set aside or investigated. Thus we begin to release the self from the habitual trap of cause and effect.
Inviting the knowing of pleasant bodily sensations to uplift the heart-mind into appreciation or even joy, which might settle into tranquility then samādhi
From Harris Park. Meditation on mindfulness of the breath. Dhamma talk about Mahasi techniques e.g. noting, where to watch the breath, influence of Japan in early twentieth century Buddhism, Satipattana Sutta parts, Mahasi and the evolution of the stages of insight.