We may think of "our possessions", but to which doorway do we experience our possessions? Through eyes only colour is experienced and this falls away immediately. Through touch only tangible object is experienced and this falls away immediately. What arises because of the appropriate conditions has no owner. We have to consider this again and again. Awareness and understanding of one object at a time as it appears through one doorway at a time will lead to detachment from the idea of self and "mine".
9 Feb 2021