In this article, we examine what local well‐being means in the contexts of collaborative heritage management and national development in Mexico. Driven by the request of Lacandon Mayas (including the second author) who live in Puerto Bello Metzabok, Chiapas, Mexico, in 2018, we engaged in archeological consolidation and heritage management to promote local tourism and sustainable economic development. This collaboration raised a series of ethical and practical questions of how to engage with the Eurocentric project of development. Addressing these issues has become critical, as the Mexican president's signature infrastructure project, Tren Maya (Maya Train), is designed to promote nationwide development via increased cultural heritage tourism in Chiapas and southern Mexico. Through critical reflection on experiences with Metzabok community members, we address Eurocentrism and colonialism by enacting a Lacandon (i.e., Hach Winik) buen vivir. This form of well‐being is relational and communal and creates a common good that includes more‐than‐humans. Via this critical perspective, we argue that a decolonial project can use the tools of development as an initial step in creating Indigenous well‐being.