Gambling is one game that can easily influence someone's way of thinking and that's why it's very unsafe to make decisions when a gambler is betting. I've seen a lot of people who made decisions while betting and I can say that majority of them got their decisions wrong while others were just fortunate enough to get huge winnings through their own decisions. When a gambler is making a decision during gambling, he's very likely to get it wrong because his emotions will not allow him to be logical enough to get his decisions right.
For example, when a gambler is winning big in gambling, he'll very likely to be overwhelmed by the effects of his win thereby thinking that every bet he stakes at that moment is definitely going to get him huge wins which at the end, it doesn't usually happen that way. Also when he's losing his money, he'll make decisions with the sole aim of getting back his losses which usually do not end as planned
It's not only in gambling, but in everything.
When someone is really focus with his activities, it's better to not disturb them or ask a thing because human only have one brain, so you can't force someone to be in good performance when they do many thing at once.
When someone in a good mood, they're become brave and positive.
When someone in bad mood, they're become coward and think everyone is bad.