I don't know what to do At time I feel like giving up

I don't know what to do At time I feel like giving up

我不知道做什么,现在我想放弃了

我不知道该做什么，那个时候我想放弃……

合起来翻译比较好：
当我想要放弃的时候我不知道要干什么
做了点修改：I don't know what to do at time when I feel like giving up。