Keep a routine. Though it's tempting to stay up late and sleep in on days off, try to sleep at the same time every day. A good wind-down routine starts an hour or so before bed.
Go dark. The blue light emitted from electronic screens shouts "WAKE UP!" at your brain. Dim your screen or, better yet, power down entirely.
Make your bed a sleep haven. Working, scrolling social media, watching TV — anything that wants your brain's attention makes it harder to fall asleep.
Try relaxation techniques. Use a guided meditation app, progressive muscle relaxation, or deep breathing exercises to calm body and mind.