As humans, our tendency is to reduce uncertainty, leading us to want to hold things still rather than accept the inevitable change that comes (Langer, 2009). However, psychological and behavioral attempts to do so can result in clinging to outdated and erroneous information, limiting our perspectives and narrowing opportunities for meaningful choice. In this paper, we merge Western psychology and Eastern wisdom traditions and build upon conceptions of mindfulness from both perspectives, to present our theory of the micromoments mindset as a tool for well-being. We define a micromoment as both the instant opening into conscious awareness of the present moment, as well as the brief stretch of experience that follows, until awareness recedes. A micromoments mindset is the cognitive prioritization toward these openings. It serves as both an entryway into mindfulness and the experience of being more mindful within the micromoment. We argue that tapping into micromoments throughout our days can facilitate factors of well-being, particularly agency and connection, so that we have more tools for living with intention in the world of uncertainty and flux in which we find ourselves. We also present the PEACE framework for optimizing well-being within micromoments.