A Yale University management professor in response to student Fred Smith's paper proposing reliable overnight delivery service: The concept is interesting and well-formed, but in order to earn better than a 'C', the idea must be feasible. ↗
Discover the time of day when you write best, and write then. For me it's about 7 am to noon. For other people it's overnight. Try not to do anything other than write between those times. ↗