What do you think?

If you're not good at something but you love it, should you continue to pursue it? I feel this way about my artistic ability and my academic ability. Artistically I am not that good. But I have so many ideas in my head I want to express. I just cant seem to do it right. There are some drawings and stuff I do that I think actually look pretty decent but they are almost always limited to a certain pose. I can't do other poses and when I try to it doesnt come out right and it doesnt look good. I see it in my head but I just cant convey it correctly. I see others who are younger than me and have a much higher level of artistic ability. It really discourages me. Another thing that I'm not good at but I want to continue to work on is math. I think I know the answer to this question already. "Yes, do what makes you happy". But I'm not doing well in my math class and talked to my dad about it. It got to the point where he suggested that I shouldn't take the class because it's not my strong suit. I keep telling myself I dont care what people tell me, I'm going to pursue what I want. I want to be a physicist as a career. My family, specifically my mom, seems like she doesnt agree with that. I get a vibe that she's thinking that I should pursue something else. No. I want to pursue what I want. And if I never get good at what I want, I dont know what I'll do. Theres no way I'm going to be some accountant. I dont want to spend my time calculating simple numbers in front of a computer screen. I want to sit at a whiteboard or piece of paper and dive into the world of advanced mathematics and science. The kind of stuff that makes your head hurt. I want to learn the math and science of the world around us. I think everyone has some thoughts about deep things like the nature of reality and the purpose of life. But I actually want to find those answers myself. I guess the reason I'm so stubborn about pursuing these things is that I want to find these answers. Not help people find them, I want to do it myself, and possibly have others help me. It sounds like I'm overreacting but sometimes I feel like the whole world is against me.