Learn how to write a resignation letter due to family reasons with our stepbystep guide and sample letters. State that you wish to quit and include your final day of work.Here are two examples of letters resigning for family or personal reasons. The first is a formal business letter, and the second is an email sample. These letters are simple and to the point. Our forms can help you make your Resignation Letter easily within minutes. When resigning for personal reasons, use the following template and examples as a starting point to write your resignation letter. Due to unforeseen personal reasons, I am unable to provide any notice.