Eight looks like infinity standing upright, and tradition reads it as renewal and endless cycles. In some cultures it is also linked to abundance, which dream books read as a wish rather than a promise.
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.