I ask my deity to be with me as I travel in my van. If it breaks down, I have people that will, and do, help. Hence my deity is still with me. I have things hanging around my home and my car for the purpose of protection. Oh yes, you can protect yourself by putting up wards and protection sigils. When I'm not wearing my pentacle necklace, I hang it up; same with my triquetra necklace. I wear a pentacle ring constantly, along with a ring of a bear paw. I have an eagle feather wrapped in leather and beads that was given to me by an American Indian. Another tribe gave me a combo of owl's foot, feather, and stone as a protection for me. They seem to recognize that I am part native, so I've gotten a few gifts from them.
Oh yes, you can protect yourself, your home, your vehicle from unwanted energies, which is what you want. BB