I'll weigh in on multipotentiality and the quarter-life crisis. Following passion led me from economic research, to strategy consulting for big pharma, to wanting to start a school for my son. I have an interest in finance, a strong social justice streak, a passion for pharma, and have been bitten by the education bug. I think the only answer, for me, is to do it all through serial (social) entrepreneurship.
Maybe that's the answer with multipotentiality--learning how to arrange your passions intertemporally so that you can dabble your way to mastery in a handful of your favourite fields. Then, come out with a wicked interdisciplinary business model centered on the nexus of your interests and launch it either as an entrepreneur or intrapreneur. Really, I think it comes down to giving yourself permission to "play" for a living without the stress of becoming someone to be esteemed.
For your DD, MON, this might mean becoming a mathematician by day and writing math-heavy plays, writing world-class curricula for others, starting a robotics firm and writing defence scenarios, etc. If she has even an inkling of interest in a field, I would hesitate to close that door.
