sick and tired

my dad is on my last nerve. I tell him I want to be an artist/art teacher, and he says itsx to unrealistic. i tell him that i love danceing so much, maybe i can make a career out of it. he says to unrealistic, you better be really freking good to even get into a school, and it isnt enough to make a living out of. i ask if i can make a cake. he suggests that i find a healthier hobby. hes really pissing me off. and when he gets upset, he yells at me, or gives me a lectur and they take at least 15 minutes. it pisses me off.