You are done when you are done, and once you are it is ok to take some time to absorb that decision. I made that decision and felt I had to act straight away and got some excellent advice here and I waited and absorbed my feelings and thoughts - actually it took me a month in the end but in the grand scheme of this whole thing that is nothing. You don't have to write it now while you are still in the angst of the decision making process. Take a deep breath and centre yourself and process your thoughts and feelings.
