Las Posadas re-enacts a search for shelter, door after door, until someone says yes. Dream books read it as the wish to be welcomed and the grace of opening your own door to others.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.