Good quality sleep is so important for not only your well being but your productivity also! If you’re not sleeping well, or your quality of sleep is not good, find out the reasons and make changes to rectify it.
Maybe try some soothing music, some white noise, or listening to some soft volume audio books. I personally prefer the variety of book where I’m learning something like a book on personal development. This is important to me because it means that if I fall asleep while I’m listening to it I’m being subconsciously fed information which is valuable to me. Also, because there’s no story to follow, it doesn’t mean I have to listen to consciously to follow the story! The other good thing is that you can listen to books on personal development as many times as you want because you always end up learning something new. But a story on the other hand, once you know the ending, it’s very unlikely that you’ll ever want to listen to it again.