In this paper, we present steps towards adequate support for answering the central questions of orienting oneself within one’s past, current, and anticipated future activities and experiences, along with application areas, which will benefit from such support. The experience-trace concept is introduced and it is shown how support for mental time-travelling within and via elements of one’s activities and experiences can be implemented as re-finding elements within one’s experience trace. To this end, two interactive journal user interfaces are proposed: ReflAction Journal and (GNOME) Activity Journal. They are enabled by the ContextDrive and Zeitgeist frameworks and their respective experience-trace implementations.