如释重负 英语怎么说？？

用英语表达这种感觉，不该将中文直译过来。
老外的一般说法是：

feeling a sense of relief, 如果要强调重负，可以说：

feeling a sense of great relief.

一般口语上讲Feeling much relieved...

简明汉英辞典上的：to feel as if relieved of a heavy load;to feel a sense of relief;to be a weight off one's mind;to take a load off sb.'s mind

I'm so relieved.我如释重负

如释重负 [简明汉英词典]
as if relieved of a heavy load

so released