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.Learn how to write a short notice resignation letter with samples. Find a solution to the challenge of resigning on short notice. Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. A good resignation letter is a simple one. There is no real need to elaborate farther than you have to. Simple resignation letter and email message samples to use to quit a job, as well as tips for what to write and how to resign. Leaving a job isn't always easy. To help, here are 10 resignation letter samples you can use when it's time to make your exit.