In this article, we discuss what to include in a professional resignation letter and we share examples of resignation letters you can use for reference. In your resignation letter, it is essential to clearly state the date of your last working day, giving your company ample time to make necessary arrangements.Download a free immediate effect resignation letter template, easily customizable for your personal situation. Speed up the process of quitting your fitness center with this free resignation letter template. Download and print for easy use. State your intention to resign: Clearly state in the opening paragraph that you are resigning from your position. Be direct and to the point. State your intention to resign: Clearly state in the opening paragraph that you are resigning from your position. Be direct and to the point. The party in the other room.