Hi Merryn
A nightmare usually is to scare you into taking notice of what you are dreaming about.
The meanings of the symbols within a dream are your meanings - ie what do Vampires and Witches mean to you. The house is usually yourself/body (where your soul resides) therefore the walls are what you put between yourself and the outside world. How do you paint yourself to the world? Would you feel endangered if you changed or touched how you look to the world or how you protect yourself from the world?
Who is outside your walls? Vampires and witches? By changing your walls are you afraid you will let them in?
Reiki is about change. When you use Reiki you are giving yourself permission to change. Your dream may be asking you for permission for Reiki to heal your walls? And to heal how you paint yourself to the outside world. It may be showing you that Reiki will protect you from the Vampires and witches and that it is safe to change. Sometimes when we put up walls about the things that frighten and scare us those walls also act as a barrier to the good things in life and we can then feel we are missing something and not know what it is.
Do a Reiki Self-Treatment. Bring the dream back into your mind. Give Reiki permission to heal the problems (even if you don't understand the symbols) that the dream presented to you. If you are first degree then just direct the Reiki flowing through your hands into the dream. If you are 2nd or 3rd Degree then you can use the SHK and CKR - draw them, say their names and ask them to heal the aspects that appeared in the dream that need healing.
You can draw a HSZSN, say its name 3 times, then ask it to connect with your own internal dream interpreter (we all have one as our dream symbols are our own symbols) and ask that your dream interpreter tells you what the dream means.
Dreams are a way for our subconscious mind to speak to our conscious mind. When we have a dream that we remember in the morning it is because our conscious mind needs to be involved with what has been presented and needs to be aware of it. Writing down your dreams is a good way of doing this - you may find in a few weeks that you have another dream about your walls - take a look as see if you have made any progress with them. If so, then healing has taken place.
Buddhists say that dreams reflect the whole person - when you do any healing work you will find you will have more dreams that you remember. It is as though your mind is clearing out cupboards and will bring up stuff that you may have created in your psyche years ago and like an old coat no longer fits your situation now. Give Reiki permission to clear away all the old patterns, beliefs, blocks and problems that you have now outgrown. You will find you will feel freer and have more energy.
Good luck,
Reiki blessings,
Tara