I generally sleep between 1-3 a.m. (I work closing shift at work)

Usually I naturally feel tired around that time so I just end up asleep.

I found the best way to sleep earlier is to force yourself off whatever you're doing and lie down at the designated time. Even if you don't fall asleep right away your body will start to associate that time to sleep.

Like I can be really tired and want to sleep between 10-12 am but it won't work and I'll end up staying up until 1. ~_~