I had trouble with negative enities in the past, using a house cleansing spell helped put an end to that. I have been told that I fight demon and the likes in my dreams. Have had several recuring dreams, I used to run and hide from them but the last few times I've had this sort of dreams I've stood up to them. What has made the difference to me is that I have Angelic protection now, of course Angels protect me at all times but due to free will they can only do so in life threatening situations. Free will means that you have to ask for and give your permission to them to help in other parts of your life.
I have Angelic protection for my house, basically asking them to patrol all sides of the house to keep any negative influence out. Not long after I did this one of my daughter's friends stayed with us. This girl is very gifted in clairsenses - she sees, hears and communicates with spirits. She came out of my bathroom telling me there was something outside, she had seen a figure walking past the window. She tried showing me, she saw it again but I couldn't. I got the message it was an angel. The next night I saw it pass the window and asked it was an angel to show me again, immediately it came back.
Last night as I went to bed I got a feeling that an negative influence was close by, I pictured my house from above and saw the Angels patroling it. There seemed to be something on the other side of the fence, I asked the Angels to make sure nothing negative got in and right as I thought that there were 2 large bangs as if someone had hit one of the sheds on the neighbouring property. Usually when I get these feelings there is no way I can sleep but last night I went straight to sleep.
To gain angelic protection all you need to do is ask them, outloud or in your head it doesn't matter. Listen and look for signs that they are here, ask for a sign. Some people find feathers. I hear them mostly.
Don't be afraid you are taking angels from "more important" tasks, they are omni-present and can be helping millions of people at the same time. For more information try reading books on the subject, Doreen Virtue is my favourite author on the subject.