"I don't want to!"
Anyone who's ever experienced a strong-willed three year old girl in a Tasmanian tantrum knows the power of that statement.
It is so powerful that, when exercised, it will make even the most hard-lined pacifist socialist start thinking Republican things like, "Is it possible to design and construct a missile (AKA a pair of rolled up socks) that can be thrown through doors and connect with soft targets with absolute precision?"
It is so powerful that, when exercised, it will make even a person who's committed to 100 days of practice and who's at day 92 choose to sit in front of the computer with a cup of coffee at 7:30 am instead of going to the practice room.
But, it is just kryptonite. It is not more powerful than locomotives, not able to leap tall buildings with a single bound. We leave that job to Super Sue, who DOESN'T WANNA [insert shaken fists here] but is about to go do it.
... because like Mommy says, "It doesn't matter if you don't want to. You HAVE to."