You're 21, you can take all the time you want but you will probably still get your degree when you're 25 or so.
I used to pioneer and was told the end was coming so not to bother with college, so here I am 30 years old and I hope to be finished with my degree in Business Administration when I'm 32 yoa, but I always think AT LEAST I'M GOING! At least I will get my degree, at least I will have a job... unlike the people who are still working menial jobs and pioneering thinking the end is around the corner.
We all have to face reality that we have to support ourselves, when you get to my age and turn 30 you will think about buying a house and trust me the pioneering business isn't that lucrative that you're going to get a house out of the deal.
Keep taking classes, something will inspire you and you'll figure it all out. Just keep going!