What is your writing Kryptonite?
So, if I understand Kryptonite correctly, it’s a substance or thing that weakens my “super powers”. Put into a writing/author context, I suppose it would be burnout and reading poorly written books. I have made the mistake of reading a poorly written or very informally written book (the prose isn’t eloquent and rather casual or muddled) and it’s affected my own writing style. I often find that if I read something, that same style tends to translate into whatever I work on. That’s bad when I’ve been reading a contemporary series for too long and try to sit down and write a historical piece. The language is totally different, but my brain has been hooked in the present so much that I can’t write anything that resembled 18th or 19th century writings.
Burnout is also a problem. If the flow isn’t there, if I’ve been writing for days on end and haven’t taken a break to breathe, then every sentence and paragraph feels like I’m wading through mud. It slows my progress and can be disheartening. Therefore, I make an effort to space out my time appropriately so I don’t get too word-fatigued.