When resigning for personal reasons, use the following template and examples as a starting point to write your resignation letter. We've rounded up tips and examples for writing a resignation letter that'll help you maintain work relationships long after leaving a company.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. Leaving a job isn't easy. Articulate the reasons behind the sudden resignation. Keep it short and to the point. There's no reason to draw this letter out beyond a single page. I am committed to making the transition process as smooth as possible. It is my regret to inform you that I must hand in my resignation as head of security at Cornado Center.