I know you're having problems with your boss, but I think you just need to take the bull by the horns and ask her what would make your relationship better.

我知道你和你的老板之间有些问题，但我认为你只需要勇敢直面问题，直接问她怎样才能改善你们的关系。

This expression, then, " to take the bull by the horns" means to try to take care of something that is very difficult or challenging.

这个表达，然后，“to take the bull by the horns”意味着试图处理非常困难或具有挑战性的事情。

So far, nothing has turned up, so I decided to take the bull by the horns and deliver inquiry letters to every company that might have a job opening.

但到目前为止，还没着落。所以我决定不管三七二十一，给每家有可能提供职位的公司一一发送一份我的简历。