In this article, we define a director resignation letter, provide a template and offer several examples to reference when writing your own. 1. Enter the date on the letter.Kindly accept this letter as my resignation with immediate effect. One of the most important part of quitting is to write a good resignation letter as Executive Director. The letter should include some key details, such as your reasoning for stepping down and the final date of your service. Name and position: State your full name and the exact board seat you're vacating.