In this article, we discuss how to include a reason in your resignation letter and provide some samples to guide your writing. Professional resignation letter examples for different reasons.Free templates and writing guide to resign on a positive note without feeling awkward. Learn how to write a resignational letter if you're quitting for personal reasons. I regret to inform you that, after much thought, I have decided to resign. Please accept this letter as a formal notice of my resignation. These top samples of resignation letters for personal reasons can be used as helpful templates when you are looking to resign due to personal circumstances.