When resigning for personal reasons, use the following template and examples as a starting point to write your resignation letter. Please accept this letter as a notice of my resignation.Time frame: Clearly state your last planned day of employment. I will go over a step-by-step resignation template letter you can use, how to structure it and provide examples of resignation letters. I wish the company continued success in the future. Sincerely,. Check out our resignation letter personal reasons selection for the very best in unique or custom, handmade pieces from our templates shops. Due to unforeseen circumstances, I must resign.