I do believe that some people can be successful in sports betting but it requires a lot of knowledge and research. Additionally you need a large bankroll to counter any unlucky streaks.
Having a deep bankroll to covered up those mistakes and unfortunate things that happen will bring you better chance to achieved, you can bet according to your knowledge and if ever you did something wrong you can go back and try recovering after assessing the next events, it can only be easy when you have good inputs with the type of games you play.