but is there such a thing as professional gamblers?
If you gamble full time, be ready to incur losses and always be in anxiety. Gambling is a game of chance and chance may not always be on your side. You might loose all your money and property if you gamble full time.
I believe that there are professional gamblers who can live from gambling. They are making money from winning the game they are familiar with because they know how to treat gambling. But it is hard for ordinary people who do not play gambling or often playing gambling to win because there will be many other things that they need to have. So think twice before you decide to use gambling as a profession.