As for me, it is a bit.. silly. As I am reading 7+2 books at once.
Why? Because it works for me.
Sometimes, I am in mood for some other book, so I shift focus on what am I reading (e.g 30 min of what I want, then few pages there and there of what I feel less so)
It also works, kind of like... spray n pray. So, I tend to have.. trouble to start... doing things. But I found, that going through each book, few pages each, helps me jumpstart the mood, and focus, and, sometimes it takes.. 2-3 tries thorough the day, it does work.
And it is helpful when I feel distracted. Like.. I can actually read, despite being in the state, where I can't focus on one thing for more than 5 minutes.
As, for why I wrote 7+2, because, 7 is in english, 2 are in Japanese. And... those two serve different use case for me at the moment. One is just what I am used to, style-wise, and another is.. to finally level up being able to read katakana itself, as I always just abused dictionary for those.
All in all, I have fun
