3. Get comfortable with ignoring some tasks.
心里踏实地去忽视某些任务
For some of you, even doing things less than perfectly will take too much time. In this case, you'll have to blow some stuff off. So experiment and see which things can fall through cracks without anyone noticing.
You already do this. Someone at work sends you an email demanding a response. But before you have time to reply, another recipient does so, so you just delete the original message. Try this approach with work you're not a central force on and see what happens.