Fowler states: I’ve long known that when you’re doing very creative work, such as writing or programming, the useful hours you can do in a day is rather less than the accepted industrial eight. I don't want to disagree with him as this is quite subjective, but when I am totally engrossed in solving a problem, I get into a flow and the time flies by. If the problem is both interesting and challenging, I can't wait to…
The problems to solve still interest me, but changing diapers or getting something from the supermarket for my daugher before it closes has become important enough that may they to "disrupt"[1] my life anytime.
[1] in quotes, because I would not want to live without these "disruptions" anymore. The accomplishment of calming my baby daughter in a few seconds dwarves any of the hacks people still know me for.