In general questioning assumption about what makes good reading. implicit rules and such.
Like, check if you think giving up on books, skipping paragraphs, reading several books at the same time, getting spoiled
I think all of those are frowned upon sometimes when they actually can help you stick with the habit.

There's also this book you can check out if you want to get more out of your reading (how to read a book, Goodreads). It might be a bit elitist but there's a few tools that are interesting to think about.