I start getting ready for bed at around 9:00pm and try to finish everything until that. Yeah, sometimes I'm late, it's not that strict. But it's very useful for me. Once I finish my stuff, until 9:30pm it's my leisure time that I use to relax - watch a TV series, read, or listen to music. And it's been good since I've started using this sleep schedule. Ofc I liked staying up late, chatting, reading more but it was not healthy. My mood was bad, I was tired, my anxiety was acting all crazy, and the next day was always a mess.

So don't think too much. All people need sleep and especially people like us. When you're well rested it's way easier for you and your body to control yourself and your mood. Sleep is health and medication. 

Just try it for a week or two at least. I promise you'll like it.