If you are being attacted by bad astral critters you could try the standard stuff . Fill your self with white light , the L.B.R.P. , do a smudging , ect. The bad astral critters could be thought forms created by you , all or most of us do this with out knowing it . One of many ways fill your self with white light. http://www.stevepavlina.com/forums/psychic-paranormal/68328-circulation-white-light.html Other methods are on the net and are easy to find . If you meet the beings on the astral plane you could use Erin Pavlina's method of a light sabor kind of weppon http://www.erinpavlina.com/