Light and Displays
Do you have a habit of checking social media or watching videos on your phone, only minutes before going to sleep? The problem is that even if the content on your phone might feel as relaxing, oftentimes it is not. The screen emits light, and the content might be too exhilarating. You can try substituting the phone with a book, listening to podcasts, or soothing music. If possible, leave electronic devices entirely out of the bedroom.
With devices, all lights should be dimmed down well before going to bed. Being exposed to bright lights at different times might affect your inner clock.
Example Habits to try:
Green, A., Cohen-Zion, M., Haim, A., & Dagan, Y. (2017). Evening light exposure to computer screens disrupts human sleep, biological rhythms, and attention abilities. Chronobiology International, 34(7), 855–865.