What happens next in this paragraph?

How to keep a book journal
Consider the benefits of a book journal.
The usefulness of a reading journal ultimately depends on how much you read. If you're reading most days of the week, it stands to reason you probably go through more books in a year than you can remember in depth.
If you find yourself struggling to remember bigger details of a book you read a few months ago, a book journal will be a big help. The act of writing thoughts down does a lot to retain memory.