I was in the same situation as you for the majority of life. After removing all caffeine consumption in January, I consistently sleep from 10PM-6AM without the

I was in the same situation as you for the majority of life. After removing all caffeine consumption in January, I consistently sleep from 10PM-6AM without the use of an alarm. No other significant changes were made to my daily habits (same exercise / nutritional regiment as always). The quality of my sleep has improved greatly and I actually feel rested / awake in the morning. 8AM-12PM is now my most productive time and I am still in disbelief that I have switched over.