A convent is traditionally read as withdrawal into a quiet, ordered life, and as the wish to step back from the noise of the world for a while. Dream books also see in it a vow — something you have promised yourself to keep.
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.