From Ken:
"In the way that joy is usually presented is you take joy in the good works of others. And one always does feel good when you take joy in the good works of others. And that's the way that it's usually presented, in the four immeasurables, and in the Brahmaviharas in the Theravadan tradition.

I've chosen to come at joy a little differently because I find that the frequency and the intensity with which people feel deficient in relationship with the world around them, I feel needs a more direct approach. And so Wake Up To Your Life very, very directly focused on that. And these verses [from the Immeasurables Prayer], not quite as directly, but you probably noticed that when you did this, you came running up against the feelings of, "I'm not enough" or "I can't do this" and things like that-the ways that we feel deficient. And that's what prevents us from actually experiencing joy."

After we listen through the entire chapter, we'll go back and listen to Ken teaching through the Four Immeasurables via six podcast classes, available here: http://www.unfetteredmind.org/category/class/the-four-immeasurables