NaNoWriMo. Events like National Novel Writing Month are great to pump out a lot of words in a short amount of time. (NaNoWriMo is a challenge to write 50,000 words during the month of November. There is a teen track here: Young Writer’s Program as well as Camp NaNoWriMo in select other months.)
Go Teen Writers: How to Win at Writing : Create Writing Routines
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