Learn how to write a resignation letter (and what not to include) and then use our example letters as a guide. In the body of the letter, immediately state your intention to resign and provide your reasoning, including only positive feelings towards your work experience.In support of the Petition, I declare the following:. Use one of our resignation letter templates. Your resignation letter should include key components like effective date, transition details, future contact information, and more. Commence your letter with a formal salutation and a concise introductory paragraph. Add contact details, company name, and date. "Resignation - (Your Name)" or "Departure - (Your Name)" will suffice, and is a better subject line than "I Quit". Proofread and Format. State your intention to resign: Clearly state in the opening paragraph that you are resigning from your position.