She was also assuming that he controlled it "well". He supposed that by the government's standards, he did. But the government also let a reasonable amount of rat droppings pass into the nation's peanut butter. He snorted out loud as that thought crossed his mind. "I do alright." He corrected her, "It's really just about practice. No one likes to hear that, but it's what you have to do."
JJ paused for a moment and then added, "And stop being afraid of it." Fear really just made it worse. If you could understand it, know your triggers and just get comfortable with setting things on fire at will, controlling it became much easier. And then you could have a little fun.