Statistically, people are more likely to die going downstairs, -than by going out of body. The link of astral and etheric bodies to the physical body is very very strong and would take an awful lot, like a stroke or heart attack to sever. A vampire or nasty entity would be a not-very-nice experience, but not likely to kill you, though it could make you feel bad.
Focus your consciousness as much as you can on beauty, and good and honorable things, then that's how you will "vibrate" on the ethers. You will be more likely to attract similar to you.
But maybe not always. Even heroes have their villains. Life is about the weave of dark and light, and how we handle it. So just try to be prepared in case..... You meet anything you don't like the feel of, go away from it a.s.a.p.