The idea of this guide results from the perceived need of researchers, research support entities, and experts on the impact field of research and innovation (R&I), to join efforts to address in a more systematic way the growing relevance and complexity of the impact dimension of R&I. Specifically, academics are increasingly expected to produce concrete and directly applicable solutions to hard-to-solve ‘real-world problems’ such as poverty, development, and environmental degradation. Thus, there is a broad range of research professionals that could be interested in a guide like this: Eoh-for-Good guide is primarily intended for BP postdoc researchers and research support staff to get valuable insights on the impact that explains the significance of their research work, through the Horizon Europe (HE) project methodology. A first objective of this guide is to help understand and clarify the terminology used in Horizon Europe Call for Proposals (HE CfPs). It offers useful ideas for addressing the whole impact text of a HE application: how we do it, why we do it this way (there are many other valid ones), we offer some ways and tips on what works for us, and most importantly what to do when we get stuck or do not know how or where to continue.