A rehab centre is read as breaking a pattern and rebuilding control. Dream books take it as the wish to be free of a habit or relationship that drains you, and as recovery taking time.
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.