Another, more direct measure of "quality of life" is happiness. While it is subjective, happiness is also quantifiable, usually by asking specific questions about how satisfied people are.
To me, it's obvious that for each of us to influence how how happy we are, it's important to know what will make us happy, and figure out how to get it. Then we need the ability to get it, what I call "power."
© Copyright 2011 Bradley Jarvis. All rights reserved.