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.
When I'm in London I do have the convenience of being close to St James Park which is also good for me because it gives me an excuse to get out and get some much needed exercise!