<prompt> Human: My 20 yo step sister is pretty horrible at personal finance - she routinely gets checks from her father but immediately goes out shopping and blows all the money, she works occasionally but any money earned gets blown the same way. Ive recommended that she start trying to save some money at least a little bit but shes said that she doesnt need to since shes living with my dad and has no rent payments or anything. Her words: Money comes and goes but stuff you buy stays forever.Anyways, I was wondering if rpf had any book recommendations for someone like that, as one of the christmas gifts I give her this year. This is a semi-joke gift since Im kinda doubting she would actually read it - but who knows, maybe something could help her out!Thanks!  <response>: Your money or your life. 