It is not that there is not enough time in the day, it is that it is hard to change your mind and switch gears to the next thing.

You have been writing all day and now the dishes need to be done. It only takes ten minutes and it is not difficult. But it is incredibly difficult to get into dishes mode.

Also…

It is not that there is not enough time in the day, it is that it is hard to give up the things that are instantly gratifying for the the things with long term returns.