High diving is read as a bold plunge from a height into deep feeling. Standing at the edge reflects hesitation before a big step; the clean entry, trust in your own nerve.
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.