⁵For introductory books to mindfulness meditation, see e.g. Gunaratana (2010); Kabat-Zinn (2012); for an attempt at a definition, see Bishop et al. (2004). In this book, the term mindfulness always refers to mindfulness meditation, often seen as a training or a learning process (instead of a state of mind, or a long-term psychological trait, which are alternative uses of the term). In terms of a well-known typology of meditation practices (Lutz et al., 2008; Dahl et al., 2015), what is emphasized here is the “open monitoring” aspect of the practice. Meditation is thus virtually synonymous with such terms as insight meditation or vipassana as far as this book is concerned.