It may be an obvious answer, but it basical and important answer. I think I need to keep practicing what I'm not doing well and invest my time. People don't think they can do everything well from the beginning. That's why you need time to adapt to everything and you have to learn, understand, and practice through those times. I had experience, when I was in elementary school, I was not good at physical education. I should have jumped two-stage jump rope as a performance test, but I learned it step by step with the help of my parents and kept practicing until the performance test day. I couldn't even do one, but I kept practicing and got to do more than 10 on the performance test day. Also, you shouldn't keep thinking yourself that you're not good at it. If you keep thinking that you're not doing well, you'll be caught up in that thought and feel pressured before you even start.