Some would call this a stack of books. It’s really a queue. New books go in at the bottom, and they’re read from the top. I’ve learned that when you tend to have 20 unread books lying around at any time, you need to organize your reading.
I used to follow the “just put them wherever and pick them up from wherever” system, but it was too stressful. I’d begin on one book, but then a more interesting book would arrive in the mail, and I’d begin on that one too, meaning to go back to the first one later. But then a third book would arrive, and so on. So I ended up with a lot of half-read books that I meant to finish some day, and really felt I ought to. Reading stopped being fun.
The queue solved everything. I either finish the book at the top, or give it up, and put it away for good. I might put it back in the queue later, but I don’t keep half-read books lying around. One book at a time. Finish it or stop. Goto next.
I try not to reorganize the queue, but I do make exceptions. Right now, the bottom of the queue is a bit heavy on fantasy, quite by accident. I’ll probably thin it out with a different kind of book, to create variety. The point is to make it fun.
What, you don’t have fun when you’re reading? Well there’s your problem right there.