Leaving a job isn't easy. When resigning for personal reasons, use the following template and examples as a starting point to write your resignation letter.A resignation letter is a way to formally end your employment and provide details such as an end date and contact information. Simply write that you're leaving for "personal reasons" after stating your intent to resign and your last day of employment with the company. Please accept this letter as a notice of my resignation. It is my regret to inform you that I must hand in my resignation as head of security at Cornado Center. Simply write that you're leaving for "personal reasons" after stating your intent to resign and your last day of employment with the company. I wish the company continued success in the future. Sincerely,.