Foundational Belief is a term used to describe a set of beliefs that form the basis for an individual's worldview. The acronym ISM is often used to refer to this concept, which stands for Ideology, System, and Methodology. Ideology refers to the set of beliefs that guide an individual's actions and decisions, while System and Methodology refer to the ways in which those beliefs are implemented. Foundational Beliefs can be religious, political, or philosophical in nature, and they often shape how an individual interacts with the world around them.