4 Ways To Resign From Your Boss
This is short and simple.
This is a reminder type, tell you when intend to resign.
This one is more appropriate one. Tell you compelling reasons why you want to quit the job. At the end, the boss still have no choice but release you after reading this!
This one is for the angry employee one. Want to threaten your boss for not releasing you. You should have put this on last resort before using any of the 3 ways above.