Prioritizing and, Sometimes, Bowing Out
The Mayo Clinic gives quite a bit of advice on time management. Time management, when done effectively and thoughtfully, can help to reduce stress significantly. What makes it work is avoiding a common trap, which is scheduling everything as if it were of the same importance. This is seldom productive and only serves to increase the amount of stress that people feel in the workplace.
In order to manage time, one must first realize the importance of time as resource. Squandering time is not effective and, if tasks are not prioritized in some logical fashion, squandering time is the inevitable outcome. It means, in the end, that important tasks are treated the same as unimportant tasks and, because of that, there is no real benefit to even trying to manage time.