Follow the Dream or Career?

i completed my final year of high school very badly. With me having bad grades and not having a high enough score to get into college/university i had to go to TAFE/Community college to aim my way to college/uni. After finally getting into college/university i feel like i've wasted 3 years of study. I didn't get any credits or exemptions for all my time studying which i feel like i've wasted now. My pion i feel is breakdancing and is always breakdancing but reality is is that breakdancing won't put food on the table for my family or anything when i have one. How can you face reality when something you love the most in the world can't be your dream job. Please help.