I think gambler's mood can swing depending on whether they are winning or losing. Winning can create a euphoric feeling and a sense of excitement, while losing can lead to disappointment, frustration, and even anger in some cases. Some gamblers may experience extreme mood swings and become addicted to the highs and lows of gambling, which can lead to financial and emotional problems. It is important for individuals to gamble responsibly and be able to manage their emotions and reactions to avoid any negative consequences.