Health behaviour change is a key issue in India and especially for reducing diabetes related risks. But the issue is confined neither to diabetes nor to India. After the proliferation of personal digital devices and widespread internet access, persuasion for behaviour change has taken new forms. In this paper we propose 8 design guidelines for future persuasive technology designers who will work in similar domains. These guidelines are formulated based on experience acquired during a design research project leading to the degree of M.Sc. They are presented with references to their theoretical foundations, with findings from the field research conducted in India or personal experience acquired during the design process. The guidelines are further explained with the result of our project, Precious, as an example. We believe most of the guidelines can also be applied to health related persuasive technology design projects that fall outside diabetes domain as well as outside India.