IMHO, the only reason you cannot stop talking during laining is because you have decided that you can’t, and therefore you won’t bother trying.
Alas, in this case, you are correct. I have not made a serious attempt at refraining from talking during laining. Furthermore, sadly, I have no intention of making a serious attempt.
All this is just further proof of the fact that I am severely deficient in my Jewish practice.
The Wolf