Dear …
This will confirm my resignation today as __(position)__ at __(name of firm).
I am looking forward to a new position I have recently accepted with another company. This decision was not an easy one and involved many hours of thoughtful consideration. I am confident, however, that this new position represents an enhancement in my career.
It is my intent to work as hard as possible to wrap up my current responsibilities today and I believe that all my tasks will be current by the end of the day. I ask you to consider waiving my notice period so that I may engage in my new position as quickly as possible.
I want to express my gratitude for a rewarding experience during my employment here and I wish __(name of firm) __ continued success.
Sincerely,