Wards, How come nobody ever seems to mention them here? Options

Hey guys,
I've read people talking about use of the LBRP and such for banishing, but I just found myself wondering; how come I never see people mentioning barriers/wards?

A friend of mine and I were doing some Chaos related stuff a while back; we didn't know about the LBRP at the time, but at one point I came up with a sigil to put up what I envisioned/intended as a brick wall made of blue/white light around the perimeter of my bedroom. At the time, it seemed to work fairly well. I've had nightmares and/or wandering nocturnal presences for most of my life, and that seemed to keep them out for a week or so at least.

Does anyone here recommend the use of such things in addition to more conventional stuff such as the LBRP?

I am in the mist of creating a protection/defense familiar in the form of a dragon. His purpose is to protect me against negative influences. I too suffer from nightmares and spiritual attacks. I’m just hesitant that it’ll suck too much of my energy. I need to make sure it gets it's energy from some source but I'm paranoid it wont do it or understand me or something and I'll just create a parasite that I cant get rid of. Yeah, anyways. . .