I write so many letters here at work, but never worry about it will start or stop, just that I know what I want to say in different words most every time. I compose in my mind as I go. I can always go back and correct syntax and spelling. I go fast, and my fingers often go faster than my mind or visaversa. None of my letter say exactly the same, but the thought is always on target to get the message across. I enjoy writing, but it does take a lot out of me. I feel drained sometime, and I'm sure you must also. Good work!!
Frank