> is it's own boss
Is his own boss.
(And it would be “its” anyway - “it’s” is a contraction for “it is” and is wrong in this context)
Spanish only has two genders, masculine and feminine, so these sorts of mistakes are an interesting revelation of how language works.
My brain translates it from: "su propio" -> "it's own".
Don't ask me why, thanks for the correction