Longer chunks of time allow me to feel “finished” at the end of a writing session, so I can shift my focus to something else.
Other people (like me), write more effectively in longer writing installments. I need 30-60 minutes because it takes me a bit longer to get the words flowing, but more importantly, I’m task oriented to a fault. If I don’t get to finish a scene or thought or bit of dialogue, it drives me crazy. Longer chunks of time allow me to feel “finished” at the end of a writing session, so I can shift my focus to something else.