I bet if I did a few days in the wilderness my need for sleep would overcome the perceived need for vigilance, and I'd probably start sleeping better. I think

I bet if I did a few days in the wilderness my need for sleep would overcome the perceived need for vigilance, and I'd probably start sleeping better. I think there's some kind of psychological/physiological feedback loop that goes on in those moments at night where you feel compelled to run to the door or switch the lights on or whatever. Sometimes rationality just doesn't help.