Rebellion
As a youth I did many incredibly stupid things. Rebelling as I saw fit in any manner. Doing outlandish things. Maybe my mind ordained it, maybe fate, who knows. But I was an extremist in my rebellion.
Age has shown me what a mature, smart rebel possesses: nuance. Rebellion is not some grandious act carried out in the most crazy manner possible. Not seeking attention and recognition for an act. It is tiny rebellious actions over and over. Every opportunity for the tiniest rebellion taken. Relished. (Even the smallest slights against the status quo (what many would call passive-aggressive).) The refined rebel understands the weight of these tiny actions, no matter how small they may appear to the world.
Together they make up the rebel that can do something — that actually does something.