In this paper I present a novel perspective on mindfulness which conceptualizes the construct as an adaptive cognitive process deeply rooted in human evolutionary history and prevalent in environments similar to those of our early ancestors. Integrating interdisciplinary research from psychology, sociology, neuroscience, ecology, and anthropology, this perspective moves beyond traditional Buddhist and modern trait-based conceptualizations of mindfulness by underscoring its strong relationship with environmental contexts. A focal point of this paper is an overview of the (largely unknown and understudied) organic emergence and development of mindfulness-like styles of awareness in many indigenous communities, such as the Pirahã, Mbuti, and Pintupi, and the identification of four key contextual factors which influence its manifestation: immediacy of feedback, methods of learning, exposure to nature, and cultural influences on self-construal. From this perspective, mindfulness is revealed as a more fundamental and adaptive aspect of human cognition, a viewpoint which not only contrasts with prevailing Buddhist and trait-based conceptualizations, but also suggests a need for a careful evaluation of current mindfulness practices and research methodologies, and also carries important implications for the understanding of human experience and the concept of self.