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 and easy to use templates.Master the art of writing a resignation letter with our comprehensive guide, offering step-by-step instructions, tips, and templates. Navigate a career transition smoothly with our resignation letter template. • Complete, sign under penalty of perjury, and mail to Travis County. This paragraph should state that you are resigning and provide the precise date that will be your last day of work. Example Introduction.