When was the last time you wrote a short story?
If you have a tenacious writing brush, you are doing a lot of writing. Also, if you write for a magazine you probably write a ton too, because they have to come out with new issues every week or month.
The 執 is a little altered, where しつ is shortened to しっ. You've seen this kind of thing before, so just keep this shortening pattern in mind and you'll be a-okay!