I had an overdue book for years
Dreams about an overdue book can symbolize feelings of guilt or regret about something important that you have neglected or postponed in your waking life. It may suggest that there is a task or responsibility that you have been avoiding or procrastinating on, leading to feelings of unease or unresolved issues. This dream could be a reminder for you to address any neglected obligations or burdens in your life in order to find peace and closure.