When I was a young child I lived in a small room with my mother. We had a fold out bed in the sofa that we shared. She would get up early enough that it was still dark to take a shower each day. I would stay in bed and pull the covers over my head. There wrapped in the warm darkness and surrounded by ambient white noise, is the only time I ever felt "safe". Sometimes when I have to get up very early I turn on the shower and while the water warms I climb back into bed just for a moment, long enough to remember what was like.