One of the major aims of this article is to provide the theoretical account of mindfulness provided by the systematic Abhidharma epistemology of conscious states. I do not claim to present the one true version of mindfulness, because there is not one version of it in Buddhism; in addition to the Abhidharma model, there is, for example, the nondual Mahamudra tradition. A better understanding of a Buddhist philosophical framework will not only help situate meditation practice in its originating tradition, but it will also clarify a Buddhist perspective on consciousness. In this article, I present the Abhidharma account of mindfulness-as explicated in the Abhidharmakosa, the root text for the Abhidharma tradition-and the theoretical model of the mind that underlies its practice. Abhidharma-Yogacara model of the mind, I believe, contains critical philosophical insights relevant to contemporary concerns while at the same time placing mindfulness meditation in its proper philosophical context.