Have you ever seen those Project Managers running around looking stressed, harassed and about to break down? However in reality you are much better off dealing with the issues you can directly alter and using a process for raising and escalating the issues outside your sphere of influence.
I'd like to introduce you all an advisory article which can give you some ideas from 10 Habits of Highly Effective Enterprise Software Project Managers. Hope it might help you find some helpful guide for your related job.
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