话不投机半句多，用英语怎么说？

话不投机半句多
One word is more than enough if you don't fit in with each other.
她老是见异思迁。
She always changes her mind at the sight of something different.
早知今日何必当初。
Why did you do it if you feel regretful now?
有则改之，无则加冕
Cottect it if you've made the mistake. Encourage yourself if you haven't made it.