1. A gambler should gambling as an entertainment, not as a way to make money or the earning source of money.
I am thinking of this first list, why should consider gambling as an entertainment someone is exactly going to make gambling a professional? We need to focus on our goal, right? By focusing that we are going tog ambling as professionalism, to earn money, so we will prepare yourself as good as possible, with good knowledge of gambling, strategy, money management, risk and also fund management seriously. So we will think that this is a professional, not only for entertainment.
2. Don't try to bet with your everyday life leading money which is very much needed or can't afford to lose like billing, rent, food or something like that.
Exactly that it is, it is like when we are going to invest and trading, only gamble with money that we can afford to lose. Using everday money for gambling means the basic mistake to do.