How to Stop

I received an email from writer friend, Carolyn:

Dear CurtissAnn,

How do know when to stop tweaking, putzing and fixing? I can’t leave it alone. It is like picking at a scab on a sore! I read and change a word or two here and there. I have a new thought, add it, and delete something else. It really was fine from the beginning! Why must I keep picking at it? Please tell me that I am not alone in this, and how to learn to let go.

This morning I took out a comma, and this afternoon I put it back in...