Patrick Ness said this quote

Your stomach isn't the boss of you,' Mel says evenly.'Oh,' Jared says, realizing. 'Sorry-'Mel shakes her head, brushing it off. 'Not what I meant. Your heart isn't the boss of you other. Thinks it is. Isn't. You can always choose. Always.''You can't choose not to feel,' Henna says.'But you can choose how to act.