YOU SAID:
The way one goes about their business is none of mine
INTO JAPANESE
彼らのビジネスを進める方法は私のものではありません
BACK INTO ENGLISH
The way they do business is not mine
INTO JAPANESE
彼らのビジネスのやり方は私のものではありません
BACK INTO ENGLISH
The way they do business is not mine
Well done, yes, well done!