...allow me to recommend a small book that has helped me considerably in
thinking about how to be an effective project manager in this wonderful
world. A warning--it's a bit goofy. But hang in there for the truly
useful insights.
 
The Gods of Management by Charles Handy
 
amazon:
http://www.amazon.com/Gods-Management-Changing-Work-Organizations/dp/019
5096169
 
powells: http://www.powells.com/biblio/72-9780195096170-0
 
It's been out a long time (decades) so it's probably widely available in
libraries as well.
 
--Joan Starr