If you are having dreams, it is important to access whether they are your own or could be from an outside force. Are they from God, from the darkness or just from yourself?
Always have a book next to your bed and write your dreams down as quickly as you can. Even if it just with a few words. Also write the date, the day of the week and the time you had the dream. You might be able to distinguish a pattern in your dreams, and it will help you to become more aware of what is happening in your dreams.
If you feel they are demonic, or they portray things which you do not agree with or want, or are not scriptural, then tell the demons to leave in the name of Jesus. Tell them you do not agree with the dream. Call on Jesus to come into your dreams and help you cast out the darkness. Ask the Holy Spirit to come in and fill you with his presence and give you good dreams. Quote scripture and listen to worship music. Pronounce the blood of Jesus over your dreams. The demons must flee in the name of Jesus.
If you are having a dream from God, you will probably know it is from Him. The dream will become clearer as they day goes forth.
One word or image from God changes your life forever.