Learn how to write a resignational letter if you're quitting for personal reasons. In this article, we discuss how to include a reason in your resignation letter and provide some samples to guide your writing.Below are some ProTips and a sample resignation letter that you can edit based on the details of your own individual situation. Explore why a good resignation letter is important and how to write it, and check out our free resignation letter examples. Please accept this letter as a notice of my resignation. Use one of our resignation letter templates.