It's 3am and I am awake and up and at my computer. I have to get up at 8am. Am I crazy?

I do this all the time. My brain kicks into gear about 10pm and I’m on a roll. I even take sleep meds. Will fall into bed now and drag in the morning. Who has suggestions for shutting things off at 10pm…or even 9pm and going to bed? I should note that when I am with my S/O every other weekend for three nights, I sleep like a baby from 10 or 11 on. Soooooo relaxing.