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. I regretfully have to inform you that, after much thought, I have decided to resign and please accept this letter as a formal notice of my resignation.Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. In the opening paragraph, clearly state that you are resigning from your position. Learn how to write a professional resignation letter with our step-by-step guide and easy to use templates. Bystep resource for helping you quickly and professionally quit your job on good terms and without burning any Bridges. The sudden resignation of Shane O'Keefe.