If you want to make it as a sportsperson - Become knowledgeable in the sport you want to participate in. Think about the sport and what it can offer in its entirety. You shouldn't want to become a professional sportsperson because of the money. There's a lot more to gain from being involved in sport. Work hard to get what you want. If it's your ambition, go for it. You don't have to be the best in the world to make it as an elite athlete. You need to be a grafter and be prepared to sacrifice.