I don't even read non-fiction, so writing it would be way too difficult.
I never read any kind of non-fiction, so writing it would be impossible for me.
ーI don't even read non-fiction, so writing it would be way too difficult.
「ノンフィクションを読むことすらしないのだから、書くのは難しすぎる。」
don't even read ... で「読むことすらしない」
writing ... would be way too difficult 「…を書くことは難しすぎるだろう」
ーI never read any kind of non-fiction, so writing it would be impossible for me.
「どんなノンフィクションも読まないから、書くのは不可能だ。」
never read で「決して読まない」
writing ... would be impossible for me で「私にとって…を書くことは不可能だろう」
ご参考まで!