I'm just debating on whether or not to recommend you talk to a doctor about a sleep study. You could have a sleeping disorder.Most nights I do. Some nights I don't. I don't think I do too bad. It's mostly on the weekends when I'm working 12 hours that my sleep is skimped.
I had a similar issue with being exhausted all the time. Turns out not just because I was working a lot. I had a case of undiagnosed sleep apnea.