I believe many gamblers do not have sufficient control over their luck. Gambling can be addictive, and when people become too engaged in the activity, they may lose track of their luck and bet more money than they can afford. It's crucial for gamblers to set limits for themselves and recognize when they're not in control of their luck. It's also important to remember that gambling is ultimately a game of chance and luck, and there's no guarantee that anyone will win or lose.