I was describing the Knowledge Base and the new Independent Learning forum to an acquaintance over the weekend, who commented that it must take a lot of discipline to study a subject on your own.
In some respect, I think it does, but I would tend to describe the required qualities differently. They would be curiosity and desire. Children tend to be curious, they are avid to explore the world around them, although I've known some who seldom asked questions, but were inclined if anything to act out their curiosity. As they get older, and especially as they are confined to the limited environment of a school, they tend to lose that curiosity. An independent student, a life-long learner has to keep or regain something of that quality.