You want to give at least a two weeks' notice. 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.Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. 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. Here's a step-by-step guide on how to write a resignation letter, with examples and a template to make it as easy as possible for you. He and his wife stayed up until two o'clock in the morning drafting his resignation letter to his present employers.