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. No reasons are necessary. 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. A good resignation letter should be clear, concise, and courteous. A letter of resignation does not need a reason. It's best to tell your boss that you're moving on to the next step in your career "facetoface or over video call," with at least two weeks' notice.