Localism, as a theory of change, posits that the expertise does not only reside in the think tanks but also among those who have local knowledge, those with a feel for how things work in a specific place and an awareness of who gets stuff done. Here, success is measured not just by how big you can scale, but by how deeply you can connect. Localism stands for the idea that there is no one set of solutions to diverse problems. Instead, it operates through a dynamic process with tight feedback loops that allow building your own solution to your problem that fits your local context. It believes that people are happiest when their lives are enmeshed in caring face-to-face relationships, building their communities together. While engaging with Development and Public Policy problems, we rely on various heuristics such as; PDIA (Problem Driven Iterative Adaptation) approach, DDD method (Doing Development Differently) and the tools of Nudging.