GTD Times: 3 Questions to ask yourself when faced with saying yes or no

This is a Community Contribution from Jon, a GTD enthusiast who hails from the midwestern U.S. From long To Do lists to overcommitted schedules, we tend to take on too much.  When is the last time you said no to someone when they asked you for something?  It can be hard to do. Most of us want to help others when they need it.  There are times, however, when we need to say no.  I know I don't like...