Without listing the actual misconceptions some people have, it's hard to say 'the left brain/right brain divide' is a misconception since I was already aware of this understanding that they just observe in different ways, not that "left brain is creative and right is logical". I grew up with the internet, though, so my understanding didn't solely originate from grade school science books that might be simplifying this phenomenon.

I get minor strokes every couple of months.

Each time I lose feeling in right side of body, and lose the ability to write. Not 100%, but close enough. Typing is fine however, if slow. Critical thinking goes to crap. Talking is fine. I can still draw, though my motivation goes to crap.

Is weird what stays and what goes.

Last time I looked writing is a left brain activity. Which controls right side.

Usually the right hemisphere is linked with comprehending speech/writing, rather than producing it, so it's interesting that you lose the ability to write. Is your speech affected at all? It could be because writing involves a bunch of other more domain-general brain functions too I guess.

I think he's talking about motor control - how the left hemisphere is responsible for controlling the right side of the body and vice versa.

Correct. Right side body is numb, cold and weak. So I assume issue is left side of brain.

I can read and speak well enough. Thinking is harder, so I tend to stay quiet.