Do you consistently forget to return your library books on time and end up with late fees?
Treat return dates like any other appointment!
As soon as you get home with those books, put a reminder on your calendar on the due date with a quick list of the titles due that day. Then when you check your calendar each night for your list of appointments tomorrow (you are checking your calendar every night, right?) you'll be reminded to gather them up with everything else you need for the day.