Being a long-term Sensecam wearer provides one with a unique insight into the benefits of, and challenges of wearing an always-on, passive, life capture device. These experiences motivate this talk, as well as a passion for researching the technical challenges of Personal Life Archives. In this keynote I will discuss my own motivation for gathering a Personal Life Archive as well as what I have learned from this process. I will motivate and describe the technical challenges to be addressed and introduce the research to address these challenges, research that points to the potential advances when cognitive science meets computer science. Finally, I will introduce the Senseseer platform, in development within DCU, which aims to efficiently gather a flexible and extensible Personal Life Archive.