I am writing to give notice of my resignation from Hornet Marketing, effective September 20. My apologies for notifying you by email. I had a very bad headache last week.
A doctor said it's highly possible that I have computer headaches caused by chronic eyestrain and
neck and back muscle strain, but he cannot be certain until I have a proper brain CT scan. Anyway I decide to give myself a long break.
I won't disappear suddenly. I can still help you to interview a suitable replacement and acquaint him/her with the projects I am working on.