iwtl How to be good at everything i do

I know many people who have never played a game before, but when they play it for the first time, they are the best at it. I want to learn how to be able to do that. This isn't only for sports related games but for everything else also, for example at school, at the subject that i love the most and have practiced for several years, someone else always just swoops in and tops the class somehow, and that person hasn't put in half the effort i have.