Wouldn't it be better putting a time-limit on the task?

给任务定个截止期限不是更好吗？

《柯林斯英汉双解大词典》

What an employee should do with an urgent task is to finish it on time.

面对一项紧急任务，作为员工应该做的就是按时完成它。

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When the time is up, refocus on your next task.

当时间到了，重新专注于你的下一个任务。

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While some people may prefer being able to work on one task at a time, we are being forced into a polychronic, multi-task state.

FORBES: Tackling The Multi-tasking Work Environment

They advise employers who have sufferers to take measures such as job-rotation and reducing the time spent on the repetitive task.

BBC: The pain of RSI

But this time entrepreneurs and others will have to take on an additional task--making sure that more people learn about the basics of our free-enterprise system.

FORBES: Capitalism: A True Love Story