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In page Free writing:

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Free writing is based on a presumption that, while everyone has something to say and the ability to say it, the mental wellspring may be blocked by apathy, self-criticism, resentment, anxiety about deadlines, fear of failure or censure, or other forms of resistance. The accepted rules of free writing enable a writer to build up enough momentum to blast past blocks into uninhibited flow, the concept outlined by writing teachers such as Louise Dunlap, Peter Elbow, and Natalie Goldberg.[citation needed]