Not sure I sleep because I am "at peace" - just lazy maybe?
When my boyfriend is home, I sleep fine. If he goes away, I am just like you. I have to look under the bed before I go to sleep to make sure no one is hiding under there. I check all the rooms of the house are empty, all the windows are locked and I look in all the wardrobes to make sure no one is in there. When I turn the lights out, I am convinced every psycho south of the equator is trying break into my house! I don't sleep properly and am even too afraid to cough in the middle of the night in case someone is outside and then they know what room I am in!
We are a concern, aren't we?