掌握一切to take everything into one's own hands

不分轻重缓急，一齐下手to try to tackle all problems at once

• 在看问题的时候要抓住问题的实质，不能眉毛胡子一把抓

  when examining a problem, one needs to identify the core problem and not just attempt to solve the whole thing in one go

• 你精力太分散了，不能眉毛胡子一把抓呀。

  You spread your energy too widely, you cannot attend to all matters at the same time.