If you want to play any sport at a professional level, you need to make training for it the primary focus in your life when it comes to the part of your life dedicated to a job or career. I hear so many kids say how they want to be a pro hockey, basketball, football or baseball player, but they only play the sport casually. To get to the level of playing to be able to earn millions of dollars per year takes incredible mental and physical abilities. You should find the best strength and conditioning coach now to help you excel at your game of choice playing at a level above your peers.
You do not want to be playing a game of catching up as you move through the levels of play. Maybe you made up your mind about playing a sport professionally when you played in Little League. Maybe it was not until senior year in high school. It does not matter when the idea hits you, but you need to take action when it does. Tiger Woods is now a professional golfing legend, and he got started young being coached by his dad. It was not by accident that he got to be as good as he is. It was by determination and purpose. I remember a TV segment where other golfers were talking about lifting weights because Tiger Woods does it and they needed to catch up to him to stay in the game.
You can be that kind of player if you do what you need to do to play at that level of expertise. Of course you need a strong body to play most any sport as there is a component of physical endurance to practically every professional game including golf. While your friends in the game are partying and dreaming about buying sports cars, you should be working with the best strength and conditioning coach you can find to pass them up in the game like they are standing still.