if (you) stop, if (you) quit
能無しが考えるのを止めたらもっとひどい事になるだろな
Things would probably get even worse if an incompetent person stopped thinking.
— 預言者 (2009)
途中で止めたら後悔するぜ。
You'll regret it if you stop halfway.
止めたらいいのに。
You should just stop.
たばこ止めたら？
Why don't you quit smoking?