I just don't understand why people advise doing what you love as a way to choose a career. It isn't always possible to earn enough to live on, doing what you love.
I don't have any children, but if I did, I'd advise them to learn a trade, then earn, save and invest to achieve financial independence no later than age 50. A trade, because plumbers, carpenters, electricians, mechanics and the like have to be physically present to do the work, which makes it harder for your employer to offshore your job. If you're of an entrepreneurial bent, you can have your own business in a trade; if not, you can work for someone else as an employee. Financially independent by age 50, because of age discrimination--if you lose your job after that age, you may never find another that pays as well, so be prepared not to need to.
I do think Freebird's idea of working temporary jobs is a good one. Even though I don't think it's practical to choose your work by what you love, it makes sense to pick one that won't make you miserable, and you can find that out by working a variety of temp or PT assignments.