I haven't slept well for years. For me, it started with my first pregnancy, over 40 years ago. Mothers rarely get enough sleep; babies need to be fed at night, they sometimes cry a lot at night, and then teething interrupts their sleep (and mom's), and illnesses cause more sleep loss, and then another baby comes along, and it just goes on and on. About the time I was beginning to feel more rested, menopause kicked in and messed my sleep up all over.
I've read many articles about achieving and maintaining good health, and nearly all of them instruct one to get plenty of sleep. Right, like I can just order that from Amazon. If everything the "experts" say about poor sleep was true, I'd be dead by now. Instead, I take naps, try to pace myself, and make the best of it.