好马不吃回头草怎么用英语写？

don't look back, move ahead.别回头了，要往前看
It is no use crying over spilt milk.覆水难收，这里也能用吧
The good horse always looks forward好马总是往前看
Let it be and move on with my life.顺其自然，继续我的生活

反正按照字来翻译不是很好，回头吃老草。。。怪怪的

A good horse will not turn back to crop the old grass.
或者意译为 what past is past.

好马不吃回头草

It is no use crying over spilt milk.
这个是英语的表达方式