The first step toward recovery is acceptance.
Here's help: The Perch's "How to Cure a Book Hangover" quiz
And here's a peek at a few of the possibilities:
Ask a librarian for more suggestions! Or if you wish to remain anonymous, check out Book Riot's episode of Dear Book Nerd dedicated to book break-up trauma, and wander through one or two of Center for the Reader's carefully curated lists. We've got the remedy.