Quote:
a kind of nonelaborative, nonjudgmental, present-centered awareness in which each thought, feeling, or sensation that arises in the attentional field is acknowledged and accepted as it is
Mindfulness is not (necessarily) meditation, but it works very well with lucid dreaming because it promotes constant self-awareness. You could even say that if lucidity is awareness of being in a dream, mindfulness is awareness of being alive :) (I'll stop here because the post is already getting long xD)