One minor thing I've done is to wake up to natural light (ie light or no shades or curtains). Prior, I had black out shades, and I'd sleep in but wake up groggy

One minor thing I've done is to wake up to natural light (ie light or no shades or curtains). Prior, I had black out shades, and I'd sleep in but wake up groggy, then have trouble sleeping the next night. It made a pretty large difference for me (I wake up and sleep pretty early and feel a lot better). Obviously, if you need to stay up late this won't work for you. There were other things I did that helped a ton (exercise, no caffeine, etc), but those are obvious and get mentioned a lot. I rarely see the natural light piece mentioned.