not know whether one is coming or going

• 昏头昏脑,不知如何是好

not know whether one is coming or going的用法和样例：

例句

1. He was such a mess that he did not know what to do.
   他心乱得不知如何是好。
2. I just can not think what I'll do without it.
   没有它我真不知如何是好。