xiàn / zài / bù / gǎn / kuài / gǎi / zhèng / cuò / wù / jiāng / lái / yí / dìng / huì / huǐ / zhī / yǐ / wǎn

现在不赶快改正错误，将来一定会悔之已晚。

If you do not correct your mistakes now, you will surely regret it when it is too late.