This comment made me think back to my childhood. I've never been in any organized outdoor/military groups, but a phrase I heard a whole lot while growing up was "you have to". Things like doing chores or homework were not presented as "should", but rather "have to". My protests were usually met with "yes, we hear you, but you still have to". Pissed me off to no end back then, but in retrospect has been highly valuable in teaching the same attitude towards problems - they don't just go away on their own.