Must you get a sensible job?
Clean the bathtub, clean your clothes, clean your body toe to top?
Need you fastidiously eat five fruit and veg a day?
Be polite, toe the line, say the things you ought to say?
Settle down, earn your money to buy a four-bed house?
Find a partner, a suitable match, an approved-of spouse?
Join a health club, exercise daily at the gym?
…
Or can we throw the book out, break the rules and go out on a whim?