Presuming that you have had a good break and hence want to resign - congrats. As far as the resignation letter is concerned, just use the FIND INFORMATION feature on the forum, and you will find many samples. My suggestion would be to keep it short, dignified, and crisp. Believe me, industry-specific resignation letters are often too flowery, and most HR professionals only read the subject and the intended date of release (if mentioned). All the very best for your next assignment.