Learn how to write a resignational letter if you're quitting for personal reasons. I am writing to inform you that I will be resigning from my current position, X at X, effective immediately.Please accept this letter as formal notice. Learn how to write a short notice resignation letter with samples. Find a solution to the challenge of resigning on short notice. This resignation letter sample provides your employer with a letter for your file and also suggests that you've done everything you can to remain professional. Sample 4: personal reason short resignation letter. However, due to unforeseen personal circumstances, I have no choice but to leave immediately. Every statement that an employee makes that he intends to resign is not a resignation. Simply write that you're leaving for "personal reasons" after stating your intent to resign and your last day of employment with the company.