You cannot win gambling when you don't have a self discipline, a self control. In one game you just have to be a formal Player to get the best move. If you have it all I'm sure people get luck every turns to wins.
When you have discipline and self control then you can save yourself from being gambling addict and also your wealth but it definitely not going to help you at any situation to win money in gambling.And also what I can't relate what you mean by formal player? The player who keeps gambling as his daily activities?
If you will be grabbing a dictionary close to you or maybe just searching the word "discipline", this will be the given meaning.
the practice of training people to obey rules or a code of behavior, using punishment to correct disobedience. So, even if you obey the rules in a casino or gambling sites, I don't think you would be able to win your gambling games. I think the discipline comes after or before you gamble.