I think dreams can reveal important information. Once, I saw a fascinating story (can't remember if I read it or it was on Youtube) about how the Periodic Table of the Elements was "discovered" via a dream. IMO our dreams can be our mind processing things but I also believe they can come from God or other spiritual entities. That is why, whenever I can (some dreams "stick" better than others), I keep a journal on my bed and write them down. Personally, some have been encouraging, given insights, or made me feel fear!