go for it 努力争取；加油
例句：
Everyone had advised me not to do it,but I decided to take the chance and go for it.
所有人都建议我不要这么做，但我决定抓住机会，努力争取。
If you want to be a teacher,why don't you go for it?
如果你想成为一名老师，为什么不努力争取呢？
A:I want to chase Mary,but I've got a bit nervous.
我想追玛丽，但是我有点紧张。
B:If you really like her,don't be shy,just go for it.
如果你真的很喜欢她，别害羞，去追吧。