How do i stop going to bed at 3 am every night?

every night i tell myself i am going to bed at 11. Then, i finish one more episode, answer one message, check one thing for work, scroll for five minutes and suddenly, it's 2:47 am and i am annoyed at myself again.

The weird part is i am not even doing anything fun. I just never reach that point where the day feels finished and it's time to sleep. Everything kind of blends together until i am too tired to keep my eyes open.