I just ran across this thread - (there are no accidents)
There are a couple of things that I can add to all the wonderful above info that I have found helpful in ensuring a positive and peaceful dreamtime.
First and foremost - clear the sleep space of clutter if at all possible. (it really DOES affect the energy if you are a sensitive.)
Second - Have you tried smudging youself and your bedroom space? ( here is how to do it -
http://www.sacred-texts.com/bos/bos054.htm )
It can clean-up a WHOLE LOT of "ugly"!
Prior to sleep, playing a tape of ocean/soothing sounds/music or finding a "sound machine" can sometimes help with cleaning up unwanted dreamtime stuff.
I have also found that a pre-sleep sea salt/Dead Sea Salt baths to be helpful in cleansing you and your energy field to clean-up psychic static and basically recharge your energy field. Plus - you can get bath salts in yummy aromatherapy scents AND can store corresponding crystals/stones in the salts to charge them to boost or add to effectiveness! (they are available at any major discount store and almost all pharmacies in the bath/beauty area)
Then again - have you thought about the possibility that these dreams might be messages from distressed people who simply need somone to hear that they are on their way to the Other Side?
They might just be scared, panicked, and reaching out to someone receptive to their newly transitioned energy.
If you can achieve a lucid dream state - tell them to go toward the Light and send them on their way with all the love in your heart.
Just hang in there - being a dreamer can sometimes be a bit trying, but you have this gift for a reason.
Here's to Love and Light and Sweetest Dreams... <img src="/images/graemlins/rolling.gif" alt="" />