Professionals who maintain a running list of the commitments that they have made to others and who consciously work those lists experience less stress.  They know that they can’t do everything.  So, they focus their efforts on their most important tasks and address less important tasks when time permits. 

To manage your time most effectively, use tools and techniques appropriate for your behavioral style preference.

Limiting the amount of time you spend on email will signicantly improve your productivity. Here's why accomplishing that feat can be so difficult and some strategies that you can employ in order to succeed.