One advice I offer my friends is – finish the book you are reading before buying a new one.
A corollary is – do not to buy more than one book at a time.
What I have observed is that the number of unread books in your library is inversely proportional to actual personal reading culture.
As the number of unread books in your library increases, your reading culture declines.
When that happens, one way to get your reading culture back is not to seek more book recommendations or buy more books. It is better to stop new purchases and read what you already have.
– Osasu Oviawe