I have a horrid nightmare that takes over my day life. In the dream I was kicked out of my college and sent to a horrible one. They're so vivid that sometimes they feel real. I'm so glad that I have a lovely boyfriend that sees me through but is there a spell or herbs to help stop them.
I have found that making a dream pillow can help. However if there is something your subconscious is trying to make your conscious mind aware of it might continue. What has worked best for me is stuffing the pillow with a mixture of lavender, chamomile and bay. The first two are relaxing and protective. Bay is said to bring about prophetic visions and dreams, but I've found it helps me to get to the root of any issues causing the repeat nightmares. Hope this helps!