The sole is the part that meets the ground, so tradition reads it as your contact with reality and the path you tread. Sore or bare soles speak of how the journey is feeling.
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.