In this article, we discuss what to include in a professional resignation letter and we share examples of resignation letters you can use for reference. Navigate a career transition smoothly with our resignation letter template.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 professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. 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. Co-founder to step down as chief executive officer.