I get up at an unholy hour in the morning my work day is completed by the time the sun rises. I have a slightly bad back which has made an enormous contribution to American literature.
I have been all things unholy. If God can work through me he can work through anyone.
As a young boy I read 'Cheaper by the Dozen' and immediately became neurotic about my use of time. It taxed me severely but only for the next 50 years. But I think it also allowed me to discipline myself to sit in the chair and be a writer where one of the most needed qualities is patience.