I've gotten into the habit of waking up early. Mostly because D gets up early (6:30am) for work. At the start, I grumbled about being woken up as I work steady afternoons and chose those hours because I wanted to sleep in.
Now that I'm pretty used to it, I can definitely say I have become more productive. I write and read more. I've been a better friend as there is more time available to connect. And I get a lot of thinking time.
So my days end up being 16hrs long. My paid work starts when most work days are 50% over and it ends when most peoples' dinners are done. By the time my dinner is done and I've decompressed, it's nearly bed time again.