Mindfulness is the process of paying attention, in an open, nonjudgmental way, to your experience in the present moment.  Dr Daniel J. Siegel, defines mindfulness as the process of developing an awareness of the present moment that is filled with COAL—curiosity, openness, acceptance and love toward our ongoing experience. Mindfulness training exercises include deliberately focusing on the breath as an anchor for your attention, maintaining an open awareness of whatever thoughts and feelings spontaneously ..

Source: How Mindfulness Improves Your Brain and Relationships | Psychology Today