Murakami sold his jazz club in order to devote himself, full time, to writing.
“Full time,” for Murakami, means something different from what it does for most people. For 30 years now, he has lived a monkishly regimented life, each facet of which has been precisely engineered to help him produce his work. He runs or swims long distances almost every day, eats a healthful diet, goes to bed around 9 p.m. and wakes up, without an alarm, around 4 a.m. — at which point he goes straight to his desk for five to six hours of concentrated writing. (Sometimes he wakes up as early as 2.) He thinks of his office, he told me, as a place of confinement — “but voluntary confinement, happy confinement.”
“Concentration is one of the happiest things in my life,” he said. “If you cannot concentrate, you are not so happy. I’m not a fast thinker, but once I am interested in something, I am doing it for many years. I don’t get bored. I’m kind of a big kettle. It takes time to get boiled, but then I’m always hot.”more - The Fierce Imagination of Haruki Murakami, NYTimes