Learn how to write a resignational letter if you're quitting for personal reasons. I am writing to inform you of my decision to retire from my position as (Your Job Title) at (Company Name).My last day of work will be (Date). Use one of our resignation letter templates. Simply write that you're leaving for "personal reasons" after stating your intent to resign and your last day of employment with the company. In the opening paragraph, clearly state that you are resigning from your position. Begin your letter with a statement of intent that is brief and focused. State that you are resigning and the effective date. Dear Ms. Emily Clarke,. I wish the company continued success in the future. Sincerely,.