We will be living , that is to say, we will be living well. If an unwholesome mind arises, mindfulness alerts us and we can check it. If a wholesome mind arises, mindfulness also knows. We can approve of the wholesome mind. We can encourage more of such mind or thoughts to arise.
Mindfulness also has a quality of memory or recollection.
So from time to time too, mindfulness can remind us of the impermanent, suffering and no-self nature of life. Reflecting often on these three characteristics of existence, we can live more wisely, with less pain-bringing kind of attachment. By engaging mindfulness in these various ways, we will be living skilfully in the present. Also, we will be gradually developing our perception on the impermanent, suffering and no-self nature of existence, and of this mind and body. On another level, mindfulness can expericence directly and vividly the constant arising and passing away of mental and physical phenomena.