Being on high alert in a dream mirrors a mind that does not quite trust the quiet. Dream books link it to stretches of life when you feel you must keep watch.
Where in your waking life have you met something like this lately?
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.