In this article, we share tips for writing a short, simple resignation letter and offer examples for you to reference when creating your own. 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.Learn how to write a professional resignation letter with our step-by-step guide, easy to use templates and helpful tips. 1. Enter your personal information at the top of the letter. The associations I've made during my employment here will truly be memorable for years to come.