I also sleep with a fan and have to sleep with noise canceling headphones. I do have a German shepherd that alerts me to noises, which I think adds to my hyper vigilance sometimes. I hear you!!! I do the same. I am exhausted all the time. I have a doctors appt this week and I’m afraid she will want to put me on meds. I hate taking medication.I wish I knew what it was like to totally relax. I've never been able to. I wake often in the night. I sleep light as hell. I have 3 fans on high in the bedroom for white noise. Unless I'm completely exhausted...I will hear a noise and think I need to go see if someone is trying to break into the house. It's frickin miserable always being on alert and looking around to survey the situation.