The single most significant change has been the globalization of labor markets. Product markets - trade in goods - have been globalizing for years. But now, with the reduction in communication expenses and the building of all sorts of IT infrastructure, essentially any job can be done almost anywhere.

Lyndon Johnson (with Abraham Lincoln close behind). Johnson was able to get things done, to read other people, and to adjust his own approach accordingly. One of the reasons he has so fascinated biographer Robert Caro over the years is Johnson's consummate skill in acquiring and using influence.

While it is almost certainly true that leaders ought to eat last, the evidence on the ever-widening difference between CEO and average employee pay and the enormous severance packages leaders obtain even as front-line workers see their economic well-being eviscerated makes a mockery of the idea that leaders do anything other than take care of themselves.

Advocates of knowledge management as the next big thing have advanced the proposition that what companies need is more intellectual capital. While that is undeniably true, its only partly true. What those advocates are forgetting is that knowledge is only useful if you do something with it.

People who don't have as much power as they would like often begin by attributing their difficulties to the environment - competitors, bosses, economic circumstances, and so forth. But in reality people are customarily their own biggest impediment to being as powerful as they would like.

One cannot control the actions of others, but we are responsible for what we do. People say things such as, "I can't do this," "it is not really me," "this makes me uncomfortable," etc. People, simply put, opt out of playing the game or doing so in a way that will make them successful. So get over yourself, and do what you need to do - and what, by the way, others around you are doing, to become more powerful.

Those who have power a) understand that the world is not always a just and fair place and accept that fact, b) understand the bases and strategies for acquiring power, and c) take actions consistent with their knowledge in a skillful way. Skill at anything requires practice, and power skills are no different.