Ok from what I gathered. You have poor sleep habit and you are a late sleeper. (also very anti-social - hate going to docs and calling med studs gay..).
Do you worry about not falling to sleep as you lay there? What about weekends, when you don't have shift works? Do you fall asleep during the day.
I think you have circadian rhythm disorder or primary insomnia. You might want to try developing a good sleeping habit, try exercise. I suggest seeing a doctor.
Hopefully Han Solo visits this thread soon, cause I am stuck.