Entangled, when did this start? Did something in your life change, someone go away, etc.?

I use to have similar problems to yours when my husband would go on a business trip. Prior to being married, I lived in an apartment all by myself for 13 years! I wasn't afraid then.

I would stay up until I was sure the robbers, murderers, rapists, etc. had gone home to bed themselves :-) Leaving the light on in my room and reading late didn't help much (I can't sleep with a light on) but I finally figured out what to do; my husband always came to bed later than I did so I staged the living room as if he were there still reading or watching TV (left lights on in there) and that was much more comforting, felt more "natural" to me. See what has changed since you've had your problems and see if you can make it more like it use to be?

Can you get a night light for the bathroom/hall? Having a night light in the bathroom helps me too, I don't need the full, real light. My husband's going away weekend after next, the first time I think he will have been away without me in the five years we've lived here in this house. I like this house better than the old one though; it's a townhouse instead of a rambler so there's fewer ways to get in :-)