I can never sleep, so I find myself staying up late at night like a night owl.
Oh, is there any problem?
No, just all my life I have never found myself being an early bird.  I hate to wake up in the morning, so I get night shift jobs, and sleep the day away.
Night shift jobs are very challenging. It also causes some disease in future.
Yeah and shift work doesn't pay that well either.  But I have a long term night job, so it works out.  Hopefully I can stay healthy.
You could try for any yoga and meditation to attain sleeps regularly in night.
Meditation might work.  It probably does have to do with high levels of stress and anxiety.  I could use a calming ritual.