I have chosen the wrong profession but I have huge pressure from my parents?

When I came out of high school I wanted to work and slowly figure out what I wanted to do. My parents didn't want that, they wanted me to get qualified in something. Initially I said fine arts and they said "oh no there's no money in it" and then i said animation/ computer graphics "oh no that's not really for you" so I look in the paper and see something that I would be able to cope with (early childhood education) and I go for it...and I think thank god I'm doing something my parents will be off my back...For the two years I've been studying I have felt soo down about it...I just can't enjoy it....it's not creative enough for me and I feel like my imagination and creativity is just slipping away into nothingness. I've said I wanted to quit but my parents get extremely angry and upset at me and make me feel really guilty. They paid for my fees so if I quit, it's like I wasted all their money (and they remind me about that often)...what do I do.?