Try to focus on a single compelling reason for your decision. I will go over a step-by-step resignation template letter you can use, how to structure it and provide examples of resignation letters.Learn how to write a resignational letter if you're quitting for personal reasons. Hover over the Change Job tab > select Resign. 4. Select your date of resignation and the reason from the list below. 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. You're moving on from your position, even accepted a new position, and perhaps have already given your two weeks notice.