You will find your emotionals are going from highs to complete lows almost hourly. Its like a rollercoaster. I suggest give yourself an opportunity to get used to this. I think it's a good idea to put off writing the letter until the 11th. It's another 7 days away, your giving yourself an opportunity to feel better and therefore think clearer when you do decide to write it. Best of luck mate and post here. It really does help.