The North Star holds still while the sky turns, so it is read as a fixed point of values or purpose. Dreaming of it points to what guides you when everything else moves.
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.