This deep focus writing schedule:
M: 3 hours T: 3 hours W: 3 hours Th: 3 hours F: 3 hours
Is more hours than:
M: 0 hours T: 0 hours W: 0 hours Th: 7 hours F: 7 hours
The second requires two Herculean efforts, the first requires none. Consistency compiles to huge numbers.