When I was single, for most of my big projects I used to get 70-80% of the work done in 4-5 days of being in the zone. And then spend months on changing the bells and whistles. Now I have to be home at a reasonable hour and hopefully in a good mood. So I have become hesitant to even get into the zone, because getting out of this state of high efficiency would make me extremely irritable.

How do married people or those with kids balance such bursts of creativity with personal commitments to their family ?