Explain why you're leaving. Briefly explain the reasons you've decided to leave, both related to your current job and to your new position.Here's how to write a resignation letter when you're quitting for a job with a better compensation package, and you want to provide your employer with a reason. In this article, we discuss how to include a reason in your resignation letter and provide some samples to guide your writing. Professional resignation letter examples for different reasons. Free templates and writing guide to resign on a positive note without feeling awkward. 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. If you're planning to quit your job here is the compilation of the best resignation letter samples to help you easily draft your resignation letter.