What part of the writing process do you find most challennging?

i think that pre-writing is the most difficult one because when you write down what you are thinking about then ,then like the next minute or day you will think of something else more better or something that makes more since to you or your reader.

What would make me understsnd more is to just put down many ideals as i caan to come up with a better pre-writhing draft .

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